BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Some bilinear control problems for evolution equations
DTSTART;VALUE=DATE-TIME:20211104T150000Z
DTEND;VALUE=DATE-TIME:20211104T160000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-311@indico.gssi.it
DESCRIPTION:Speakers: Piermarco Cannarsa (Università di Roma "Tor Vergata
")\nAbstract:\n\nBilinear control systems are receiving increasing attenti
on in recent years\, as they can be used to study problems for which an ad
ditive control action would be unrealistic. For such systems\, in infinite
dimension\, weaker controllability properties can be expected than for sy
stems with additive controls. For instance\, exact controllability is out
of question due to a well-known negative result by Ball\, Marsden\, and Sl
emrod back in the 80’s. Nevertheless\, one can seek to steer states to s
pecial targets either in finite or infinite time. In this talk\, I will pr
esent recent results where the above problem is addressed for evolution eq
uations of the form u'(t) = Au(t) + p(t)Bu(t)\, with A a self-adjoint nega
tive operator on a Hilbert space\, B a linear operator satisfying a certai
n spreading condition\, and p(t) a single-input control. When such a condi
tion fails for B (for instance when B=I)\, I will also discuss control iss
ues that can be reduced to invariance problems.\n\n \n\n \n\nThe seminar
will be held in the Mail Lecture Hall and it will also be streamed online
via zoom at this link:\n\nhttps://us02web.zoom.us/j/83520111787\n\n\nPlea
se notice that\, in accordance to GSSI regulations\, your Green Pass will
be checked at the entrance.\nhttps://indico.gssi.it/event/311/
LOCATION:Ex-ISEF-Building-Main Lecture Hall (GSSI)
URL:https://indico.gssi.it/event/311/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Probability and Statistical Mechanics
DTSTART;VALUE=DATE-TIME:20211108T080000Z
DTEND;VALUE=DATE-TIME:20220301T100000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-316@indico.gssi.it
DESCRIPTION:Speakers: Marielle Simon (GSSI)\, Lu Xu (GSSI)\, Serena Cenati
empo (GSSI)\, Stefano Olla (GSSI)\, Errico Presutti (GSSI)\nLecturers\nSte
fano Olla\, stefano.olla@gssi.it\nMarielle Simon\, marielle.simon@gssi.it
\nErrico Presutti\, errico.presutti@gmail.com\nSerena Cenatiempo\, serena
.cenatiempo@gssi.it\nLu Xu\, lu.xu@gssi.it\n\n\nTimetable and workload\nLe
ctures: 60 hours\nFinal project assignment: 24 hours\n\nCourse description
and outcomes\nThis is a probability course that will constitute an introd
uction to the main concepts of Statistical Mechanics. One of the purpose
s of statistical mechanics is to explain thermodynamics in terms of the
“microscopic” dynamics. The general consensus is that thermodynamics d
escribe the “macroscopic” behavior of some quantities (energy\, pressu
re\, . . . ) under the influence of external forces or heat bath. Macrosco
pic means that laws of thermodynamics emerge for “large” systems and i
n a large time scale. We present in these lectures a precise mathematical
approach where thermodynamics laws (Carnot cycles\, Kelvin and Clausius pr
inciples\, etc.\, and the corresponding first and second principle of ther
modynamics) are obtained through space-time scaling limits. In this approa
ch the problem of thermodynamics is reduced to a purely mathematical probl
em\, very difficult indeed.\nWe will avoid making a general theory\, and i
n the first part of the course we will work with the simple system of one
dimensional hard core classical dynamics and some variants of this. We wil
l study the stationary measures and scaling limits.\n\nIn the second part
of the course we will study phase transitions in equilibrium for some latt
ice models\, like the Ising model.\n\nIn the third part we will give an in
troduction to the statistical mechanics of quantum systems.\n\nThe classes
will be complemented by TA sessions\, aimed to recall some of the mathem
atical background.\n\n\nExamination and grading\nEach student\, after havi
ng delivered a written report on the final project\, will be evaluated acc
ording to the ECTS grading scale.\n\n \nhttps://indico.gssi.it/event/316/
LOCATION:
URL:https://indico.gssi.it/event/316/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Numerical Methods
DTSTART;VALUE=DATE-TIME:20211108T090000Z
DTEND;VALUE=DATE-TIME:20220228T110000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-312@indico.gssi.it
DESCRIPTION:Speakers: Nicola Guglielmi (GSSI)\, Francesco Tudisco (GSSI)\n
Lecturers\nNicola Guglielmi\, nicola.guglielmi@gssi.it\nFrancesco Tudisco\
, francesco.tudisco@gssi.it\n\n\nTimetable and workload\nLectures: 60 hour
s\nLabs: 20 hours\nFinal project assignment: 24 hours\n\n\nCourse descript
ion and outcomes\nThis course is an introduction to modern numerical analy
sis. The primary objective of the course is to develop graduate-level un
derstanding of computational mathematics and skills to solve a range rea
l-world mathematical problems on a computer by implementing advanced numer
ical algorithms using a scientific computing language (such as MATLAB or
Julia). \n\n\nCourse requirements\nCalculus and basic linear algebra and
numerical analysis. Previous programming experience in any language may h
elp.\n\n\nCourse content\nThe course will cover the following topics\n\n
\n\n\n Boundary value problems (BVP):\n \n Finite differences\;\n Variat
ional methods\;\n Rayleigh Ritz Galerkin methods\n \n \n Numerical optimi
zation:\n \n Unconstrained optimization\; \n Gradient descent methods\;
\n Conjugate directions method\;\n Constrained optimization\;\n Penaliz
ation methods\n \n \n Iterative methods for eigenvalue problems:\n \n Pow
er method\; \n Subspace iteration\; \n Krylov subspace methods\; \n
Application to spectral clustering\n \n \n Methods for sparse linear syste
ms:\n \n Sparse direct solvers\;\n General projection methods\; \n CG
and GMRES\;\n Preconditioning\; \n \n \n Numerical quadrature:\n \n Ord
er conditions\; \n Error analysis\; \n Superconvergence\; \n Orthogo
nal polynomials\; \n Gaussian quadrature\n \n \n Linear multistep method
s for ODEs:\n \n Explicit and implicit Adams' methods\; \n Local error
and stability\;\n Convergence\; \n Variable step size multistep methods
\; \n General linear multistep methods\n \n \n Topics in Computational M
achine Learning\n \n Nesterov accelerated gradient\n Stochastic gradient
descent\n Graph and Convolutional Neural Networks\n Training NN: forwar
d and backward propagation\n Implicit-depth NN\n \n \n Runge Kutta method
s for ODEs: \n \n General form\; \n Convergence theory\;\n Order con
ditions\; \n Stability theory\; \n A stability\; \n B stability\; \
n Stiff problems\; \n Von Neumann theorem\; \n Evolution PDEs\n \n \n
\n\n \nBooks of reference\nE. Hairer\, G. Wanner\, S. P. Nørsett\; Solvi
ng Ordinary Differential Equations I\nE. Hairer\, G. Wanner\; Solving Ordi
nary Differential Equations II\nY. Saad\; Iterative methods for Sparse Lin
ear Systems (Free Online Version)\nY. Saad\; Numerical methods for Large
Eigenvalue Problems (Free Online Version)\n \nExamination and grading\nS
tudents will be evaluated on the basis of a written exam and computational
assessment to be taken at the end of the course. Both tests are graded ba
sed on the ECTS grading scale\n \nhttps://indico.gssi.it/event/312/
LOCATION:Ex-ISEF-Building-Room D (GSSI)
URL:https://indico.gssi.it/event/312/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Latest Results from the Alpha Magnetic Spectrometer on the Int
ernational Space Station
DTSTART;VALUE=DATE-TIME:20211110T134000Z
DTEND;VALUE=DATE-TIME:20211110T144000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-317@indico.gssi.it
DESCRIPTION:Speakers: Samuel Ting\nhttps://indico.gssi.it/event/317/
LOCATION:
URL:https://indico.gssi.it/event/317/
END:VEVENT
BEGIN:VEVENT
SUMMARY:An introduction to Continuum Mechanics
DTSTART;VALUE=DATE-TIME:20211112T080000Z
DTEND;VALUE=DATE-TIME:20220304T160000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-314@indico.gssi.it
DESCRIPTION:Speakers: Francesco Viola\, Roberto Verzicco\nLecturers\nRober
to Verzicco\, roberto.verzicco@gssi.it\nFrancesco Viola\, francesco.viola@
gssi.it\n\nTimetable and workload\nLectures: 60 hours\nHomework assignment
s: 4 at 4 hours each\nFinal project and exam: 20 hours\n\nCourse descripti
on and outcomes\nThe students attending this course are expected to become
familiar with vector spaces relevantto continuum mechanics and to perform
vector and tensor manipulations. They will be ableto describe motion\, de
formation and forces in a continuum\, derive equations of motion andconser
vation laws and use constitutive models for fluids and solids. With these
tools at handstudents will be able to solve simple boundary value problems
for fluids and solids. As anapplication of a challenging problem of conti
nuum mechanics\, the final part of the course willbe devoted to introduce
the basics of turbulence and some related computational method.\n\nTopics\
n1. Reminders on Linear Algebra and Tensor Calculus\n2. The Continuum hypo
thesis: from microscopic to macroscopic\n3. Kinematics of deformable bodie
s\n4. Eulerian and Lagrangian descriptions of motion\n5. The balance laws
of continuum mechanics: Conservation of Mass and Energy\, MomentumBalance\
n6. Constitutive Relations\n7. Solid mechanics: nonlinear and linearized e
lasticity\n8. Fluid dynamics: the Navier Stokes equations\n9. Analytical a
nd asymptotic solutions of the Navier Stokes equations\n10. An introductio
n to hydrodynamic instabilities\n11. An introduction to the physics of flu
id turbulence\n12. Kolmogorov theory and wall turbulence\n13. Basic concep
ts on computational methods for fluid dynamics and turbulence simulation\n
\nExamination and grading\nEach student\, after having delivered a written
report on the final project\, will be evaluated andranked according to th
e ECTS grading scale.\n\nSuggested references\n\n\n M. Gurtin\, Introducti
on to Continuum Mechanics\, Academic Press 1981\n S. Pope\, Turbulent Flow
s\, Cambridge University Press 2000\n\nhttps://indico.gssi.it/event/314/
LOCATION:GSSI
URL:https://indico.gssi.it/event/314/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Self-Interacting Dark Matter
DTSTART;VALUE=DATE-TIME:20211117T133000Z
DTEND;VALUE=DATE-TIME:20211117T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-318@indico.gssi.it
DESCRIPTION:Speakers: Hai-Bo Yu (University of California)\nIn this talk\,
I will give an overview on dark matter distributions in galactic systems\
, including spiral galaxies in the field\, Milky Way satellite galaxies\,
newly-discovered ultra diffuse galaxies\, and galaxy clusters\, and show t
hat they are more diverse than predicted in the standard cold dark matter
theory. Then I will show that self-interacting dark matter may provide a u
nified explanation to the observed diversity over the wide range of galact
ic mass scales. I will further discuss other astrophysical implications of
self-interacting dark matter\, such as the origin of supermassive black h
oles in the early Universe.\nhttps://indico.gssi.it/event/318/
LOCATION:
URL:https://indico.gssi.it/event/318/
END:VEVENT
BEGIN:VEVENT
SUMMARY:JUNO experiment and the neutrino mass hierarchy measurement
DTSTART;VALUE=DATE-TIME:20211124T133000Z
DTEND;VALUE=DATE-TIME:20211124T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-319@indico.gssi.it
DESCRIPTION:Speakers: Alessandro Paoloni (INFN)\nThe neutrino mass hierarc
hy (NMH) is one of the presently open issues in \nneutrino physics.\nThe
JUNO experiment\, whose installation is scheduled to finish within \n2022
\, will takle this puzzle in 6 years of data taking\, exploiting \nelectr
on anti-neutrinos produced by two nuclear power complexes located \nin th
e GuangDong province of China Popular Republic.\nIn the first part of the
seminar the state-of-the-art of neutrino \noscillations will be presented
and the perspectives of JUNO and other \nexperiments about NMH discussed
.\nThe design guide-lines of JUNO will be then explained and the detector
\ndescribed.\nIts physics potential beyond NMH will also be treated.\nht
tps://indico.gssi.it/event/319/
LOCATION:
URL:https://indico.gssi.it/event/319/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Probing gravity in the strong field regime
DTSTART;VALUE=DATE-TIME:20211201T133000Z
DTEND;VALUE=DATE-TIME:20211201T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-320@indico.gssi.it
DESCRIPTION:Speakers: Thomas Sotiriou (University of Nottingham )\nGravita
tional waves astronomy promises to reveal to us the nature and structure o
f black holes and compact stars. This information comes encoded in the wav
eforms current and future detectors will pick up. Extracting it is well kn
own to be a significant data analysis challenge. Interpreting it\, and usi
ng it to probe gravity itself and fundamental physics\, is a whole differe
nt challenge\, that involves modelling strong gravity beyond general relat
ivity and/or the standard model. I will give a broad overview of what this
entails and discuss future perspectives in this direction.\nhttps://indic
o.gssi.it/event/320/
LOCATION:
URL:https://indico.gssi.it/event/320/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20211215T133000Z
DTEND;VALUE=DATE-TIME:20211215T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-321@indico.gssi.it
DESCRIPTION:Speakers: Julie McEnery (NASA's Goddard Space Flight Center)\n
https://indico.gssi.it/event/321/
LOCATION:
URL:https://indico.gssi.it/event/321/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Exploring the UNiverse in gravitational waves in the milli-Hz band
DTSTART;VALUE=DATE-TIME:20220119T133000Z
DTEND;VALUE=DATE-TIME:20220119T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-322@indico.gssi.it
DESCRIPTION:Speakers: Stas Babak (Universit´e de Paris)\nLISA is a large
class ESA-lead mission scheduled for launch in 2034. It aims at exploring
the universe in gravitational waves\nwithin the frequency band from 0.1 mH
z to 0.1 Hz. It will observe population of Galactic ultra-compact binaries
\,\nmerging massive black holes\, extreme mass ratio inspirals\, early ins
piral stage of the stellar mass black holes and\, hopefully\,\nstochastic
signal from the early Universe. In this talk I will review the main gravit
ational sources and our ability to detect\nthem with LISA. Then I describe
the science goals which we want to achieve with gravitational waves obser
vations in the\nmilli-Hz band.\nhttps://indico.gssi.it/event/322/
LOCATION:
URL:https://indico.gssi.it/event/322/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Analog models of physical phenomena
DTSTART;VALUE=DATE-TIME:20220126T133000Z
DTEND;VALUE=DATE-TIME:20220126T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-323@indico.gssi.it
DESCRIPTION:Speakers: Massimo Mannarelli (INF_LNGS)\nhttps://indico.gssi.i
t/event/323/
LOCATION:
URL:https://indico.gssi.it/event/323/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pulsars: magnetic monsters at nuclear density
DTSTART;VALUE=DATE-TIME:20220209T133000Z
DTEND;VALUE=DATE-TIME:20220209T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-324@indico.gssi.it
DESCRIPTION:Speakers: Nanda Rea (Institute of Space Sciences Barcelona)\n
Pulsars are now 50 years old! Pulsars turned 3000! These relativistic star
s are unique laboratories where not only the most extreme gravity and elec
tromagnetism can be probed\, but also the strong and weak interaction can
be studied in regimes that have no hope of being explored on Earth. The re
cent discovery of gravitational waves is allowing an unprecedented view of
previously invisible parts of the Universe. This will unravel the physics
of the neutron stars (aka pulsars)\, which are unique objects whose emiss
ion encompasses all the available multi-messenger tracers: electromagnetic
waves\, cosmic rays\, neutrinos\, and gravitational waves. The study of
these objects transcends the traditional astrophysical approach and requir
es a multidisciplinary effort that spans from particle and nuclear physics
to astrophysics\, from experiment to theory\, from gravitational waves to
the electromagnetic spectrum. I will review in this seminar what pulsars
are\, as well as the most important discoveries in the field\, their conse
quences to physics in general\, and what we aim for in the next decade. Pa
rticular attention will be given i) to magnetars - the biggest magnets in
the Universe\, ii) to millisecond pulsars - the fastest rotating astrophys
ical objects\, iii) to pulsars as gravitational wave emitters and detector
s\, and iv) to pulsars as GPS systems for future deep space travels.\nhttp
s://indico.gssi.it/event/324/
LOCATION:
URL:https://indico.gssi.it/event/324/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220216T133000Z
DTEND;VALUE=DATE-TIME:20220216T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-325@indico.gssi.it
DESCRIPTION:Speakers: Tanja Hinderer (University of Amsterdam)\nhttps://in
dico.gssi.it/event/325/
LOCATION:
URL:https://indico.gssi.it/event/325/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220222T133000Z
DTEND;VALUE=DATE-TIME:20220222T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-338@indico.gssi.it
DESCRIPTION:Speakers: Philip Diamond (University of Manchester)\nhttps://i
ndico.gssi.it/event/338/
LOCATION:
URL:https://indico.gssi.it/event/338/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220223T133000Z
DTEND;VALUE=DATE-TIME:20220223T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-336@indico.gssi.it
DESCRIPTION:Speakers: Frank Wilczek\nhttps://indico.gssi.it/event/336/
LOCATION:Online
URL:https://indico.gssi.it/event/336/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220302T133000Z
DTEND;VALUE=DATE-TIME:20220302T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-326@indico.gssi.it
DESCRIPTION:Speakers: Yonit Hochberg (Hebrew University of Jerusalem)\nhtt
ps://indico.gssi.it/event/326/
LOCATION:
URL:https://indico.gssi.it/event/326/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The entropy of Hawking radiation
DTSTART;VALUE=DATE-TIME:20220309T133000Z
DTEND;VALUE=DATE-TIME:20220309T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-335@indico.gssi.it
DESCRIPTION:Speakers: Juan Maldacena (Institute for Advanced Study School
of Natural Sciences\, Princeton)\nWe will review recent progress on the bl
ack hole information problem that involves a new understanding of how to c
alculate the entropy of Hawking radiation. We show how the method for comp
uting gravitational fine-grained entropy\, developed over the past 15 year
s\, can be extended to capture the entropy of Hawking radiation. This tech
nique reveals the large corrections needed for the entropy to be consisten
t with unitary black hole evaporation.\nhttps://indico.gssi.it/event/335/
LOCATION:Online
URL:https://indico.gssi.it/event/335/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220316T133000Z
DTEND;VALUE=DATE-TIME:20220316T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-327@indico.gssi.it
DESCRIPTION:Speakers: Elisa Resconi (Technical University Munich)\nhttps:/
/indico.gssi.it/event/327/
LOCATION:
URL:https://indico.gssi.it/event/327/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220323T133000Z
DTEND;VALUE=DATE-TIME:20220323T143000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-328@indico.gssi.it
DESCRIPTION:Speakers: Takaaki Kajita (The University of Tokyo)\nhttps://in
dico.gssi.it/event/328/
LOCATION:
URL:https://indico.gssi.it/event/328/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220330T123000Z
DTEND;VALUE=DATE-TIME:20220330T133000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-329@indico.gssi.it
DESCRIPTION:Speakers: Susanne Mertens (Technical University Munich)\nhttps
://indico.gssi.it/event/329/
LOCATION:
URL:https://indico.gssi.it/event/329/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBA
DTSTART;VALUE=DATE-TIME:20220420T123000Z
DTEND;VALUE=DATE-TIME:20220420T133000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-330@indico.gssi.it
DESCRIPTION:Speakers: Giorgio Gratta (Stanford University)\nhttps://indico
.gssi.it/event/330/
LOCATION:
URL:https://indico.gssi.it/event/330/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Surveying the Dynamic Universe with the Fermi Gamma-ray Space Tele
scope
DTSTART;VALUE=DATE-TIME:20220427T123000Z
DTEND;VALUE=DATE-TIME:20220427T133000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-331@indico.gssi.it
DESCRIPTION:Speakers: Judith Racusin (NASA's Goddard Space Flight Center)\
nThe Fermi Gamma-ray Space Telescope has provided continuous observations
of the keV-GeV gamma-ray sky for more than a decade\, discovering sources
varying on timescales of milliseconds to years\, opening up new source cla
sses and counterparts to other astrophysical messengers. In this seminar
\, I will highlight some of the biggest discoveries of the Fermi mission u
tilizing data from both the Gamma-ray Burst Monitor and the Large Area Tel
escope. I will outline what the coming years may bring for Fermi\, espec
ially in context of new and upgraded multiwavelength and multimessenger ob
servatories\, and what might be next for gamma-ray surveyors.\nhttps://ind
ico.gssi.it/event/331/
LOCATION:
URL:https://indico.gssi.it/event/331/
END:VEVENT
BEGIN:VEVENT
SUMMARY:High-Energy Neutrino Astrophysics in the Multimessenger Era
DTSTART;VALUE=DATE-TIME:20220504T123000Z
DTEND;VALUE=DATE-TIME:20220504T133000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-332@indico.gssi.it
DESCRIPTION:Speakers: Kohta Murase (Pennsylvania State University)\nThe di
scovery of high-energy cosmic neutrinos opened a new window of astropartic
le physics. Their origin is a new mystery in the field\, which is tightly
connected to the long-standing puzzle about the origin of cosmic rays. I w
ill give an overview of the latest results on high-energy neutrino and cos
mic-ray observations\, and demonstrate the power of "multimessenger" appro
aches. In particular\, I will show that the observed fluxes of neutrinos\,
gamma rays\, and extragalactic cosmic rays can be understood in a unified
manner. I will also highlight the recent developments about astrophysical
neutrino emission from supermassive black holes and violent transient ph
enomena. Possibilities of utilizing high-energy neutrinos as a probe of ph
ysics beyond the Standard Model may be discussed.\nhttps://indico.gssi.it/
event/332/
LOCATION:
URL:https://indico.gssi.it/event/332/
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Riemman Hypothesis
DTSTART;VALUE=DATE-TIME:20220511T123000Z
DTEND;VALUE=DATE-TIME:20220511T133000Z
DTSTAMP;VALUE=DATE-TIME:20211128T063400Z
UID:indico-event-333@indico.gssi.it
DESCRIPTION:Speakers: Fabrizio Tamburini (Zentrum für Kunst und Medientec
hnologie Karlsruhe)\nThe Riemann Hypothesis is one of the most challenging
and fascinating problems in mathematics\, with many implications also in
real life\, including classical cryptography and e-trading.\nBernhard Riem
ann in 1859 hypothesized that the complex function $\\zeta(z)$\, used as c
orrecting term for the counting of primes P before a given number N\, shou
ld admit a set of “non-trivial” complex zeros whose real part is alw
ays 1/2 in order to give the correct value of P. \nWe analyze two differ
ent approaches to better understand a possible route to solve the Riemann
Hypothesis.\nThe first one is based on the Hilbert and Pólya approach\, w
here one has to find a suitable Hermitian or unitary operator whose eigenv
alues distribute like the zeros of the zeta function. We apply the infinit
e-spin components Majorana equation for a family of particles in a Rindler
spacetime to overlap\, according to Regge theory\, the distributions of t
he zeros gluing together particle and antiparticle solutions\, overlapping
with the zeros of zeta.\nThe other approach is instead based on string sc
attering. More precisely\, we compare the distribution of the zeros of zet
a with that of the poles of the scattering matrix S describing a system of
tachyonic strings. To prove the Riemann hypothesis one has to explain the
still unclear point for which the poles and zeros of the S-matrix overlap
the zeros of zeta but they always come out in pairs\, related via complex
conjugation. This can be explained with the Reggeized version of the Majo
rana solution in an hyperbolic spacetime with which one obtains a set of a
ngular momenta and coordinates corresponding to the zeros of zeta as a fun
ction of the angular momentum j.\nhttps://indico.gssi.it/event/333/
LOCATION:
URL:https://indico.gssi.it/event/333/
END:VEVENT
END:VCALENDAR