Conveners
Special session on Astro-Cosmo-Gravity
- Kyrill Bugaev (Bogolyubov Institute for Theoretical Physics)
Special session on Astro-Cosmo-Gravity
- D. Blaschke (Institute of Theoretical Physics, University of Wroclaw, 50-204 Wroclaw, Poland; Bogoliubov Laboratory of Theoretical Physics, JINR Dubna, 141980 Dubna, Russia; National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute), 115409 Moscow, Russia)
Special session on Astro-Cosmo-Gravity
- David Blaschke (University of Wroclaw)
Special session on Astro-Cosmo-Gravity
- David Blaschke (University of Wroclaw)
Special session on Astro-Cosmo-Gravity
- David Blaschke (University of Wroclaw)
Special session on Astro-Cosmo-Gravity
- D. Blaschke (Institute of Theoretical Physics, University of Wroclaw, 50-204 Wroclaw, Poland; Bogoliubov Laboratory of Theoretical Physics, JINR Dubna, 141980 Dubna, Russia; National Research Nuclear University "MEPhI" (Moscow Engineering Physics Institute), 115409 Moscow, Russia)
Special session on Astro-Cosmo-Gravity
- Igor Mishustin (Goethe University)
Special session on Astro-Cosmo-Gravity
- Igor Mishustin (Goethe University)
Special session on Astro-Cosmo-Gravity
- Igor Mishustin (Goethe University)
A novel equation of state with the surface tension induced by particles interaction was generalized to describe properties of the neutron stars. Interaction between particles accounted via hard-core repulsion taken into account by the proper volumes of particles and phenomenological attraction term. Recently, this model was successfully applied to the description of the properties of nuclear...
In this talk I will touch upon several features of modern ab initio low-energy nuclear theory. I will start by discussing what "ab initio" means in this context. Specifically, I will spend some time going over nucleon-nucleon and three-nucleon interactions and their connections with the underlying theory of Quantum Chromodynamics. I will then show how these interactions are combined with...
We study a "classical" bouncing scenario in beyond Horndeski theory. We give an example of spatially flat bouncing solution that is non-singular and stable throughout the whole evolution. The model is arranged in such a way that the scalar field driving the cosmological evolution initially behaves like full-fledged beyond Horndeski, whereas at late times it becomes a massless scalar field...
Following a period of inflation one must reheat the Universe, and a particularly efficient way to do this is through preheating, where the homogeneous inflaton condensate produces particles due to a resonance.
The break-up of the inflaton condensate can lead to long-lived localized lumps of oscillating condensate, known as oscillons, and we shall show that these lumps are able to produce...
The origin of ultra-high energy cosmic rays (UHECRs) has been a long-standing mystery. The Telescope Array (TA) is the largest experiment in the northern hemisphere observing UHECR in Utah, USA. It aims to reveal the origin of UHECR by studying the energy spectrum, mass composition and anisotropy of cosmic rays. TA is a hybrid detector comprised of three air fluorescence stations which measure...
Observations of short gamma-ray bursts indicate ongoing energy injection following the prompt emission, with the most likely candidate
being the birth of a rapidly rotating, highly magnetised neutron star.
In this talk we discuss how X-ray observations of the burst remnant
can constrain properties of the nascent neutron star (such as the magnetic field-induced ellipticity and the saturation...
The present analysis is motivated by the fact that, although the local Lorentz invariance is one of the cornerstones of modern physics, cosmologically a preferred system of reference does exist.
Modern cosmological models are based on the assumption that there exists a typical (privileged) Lorentz frame, in which the universe appear isotropic to "typical" freely falling observers.
The...
Profiting of the favourable conditions offered by the Gran Sasso underground laboratory and of the several low-background DAMA set-ups, many and competitive results have been obtained. In particular, this talk will review the main DAMA searches on double beta decays, on other rare decays and transitions and on some investigation on matter stability. Moreover, perspectives of a complementary...
The DAMA/LIBRA experiment is in data taking in the underground Gran Sasso Laboratory. The data collected by DAMA/LIBRA-phase1 have been released, and considering also the former DAMA/NaI experiment, the data of 14 independent annual cycles (total exposure 1.33 ton x yr) - analysed by exploiting the model-independent Dark Matter (DM) annual modulation signature - have given evidence at...
We will make the case that pedal coordinates (instead of polar or Cartesian coordinates) are more natural settings in which to study force problems of classical mechanics in the plane. We will show that the trajectory of a test particle under the influence of central and Lorentz-like forces can be translated into pedal coordinates at once without the need of solving any differential...
The CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) experiment located at Laboratori Nazionali del Gran Sasso in Italy searches for dark matter particles elastically scattering off nuclei. The target consists of scintillating CaWO4 crystals operated as cryogenic calorimeters at millikelvin temperature. Separate cryogenic light detectors observe the scintillation light...
Directional dark matter detection is next-generation experiment of dark matter search. By means of directional information, it can give a constraint on the velocity distribution of dark matter. Especially we investigate the possibility to measure anisotropy of the distribution with gaseous and solid detector in this work.
We study a model of keV-scale sterile neutrino with
relatively large mixing with the Standard Model sector. Usual
considerations predict active generation of such particles in the
Early Universe, which leads to constraints from the total Dark
Matter density and absence of X-ray signal from sterile neutrino
decay. These bounds together may deem any attempt of creation of
the keV...
We study the butterfly effect by considering shock wave solutions near the horizon
of the AdS black brane in some of 3-dimensional Gravity models including; 3D Einstein Gravity, Minimal Massive 3D Gravity, New Massive Gravity, Generalized Massive Gravity, Born-Infeld 3D Gravity and New Bi-Gravity. We calculate the butterfly velocities of these models and also we consider the critical points...
Cosmic ray experiments with emulsion chambers exhibit several unusual phenomena which are hard to interpret within the Standard Model. We present the systematic survey of most intriguing exotic events such as coplanar or aligned events, penetrating hadrons with abnormally weak absorption in lead, ‘Centauro’-type events, gamma-hadron families with huge halos and some other types of events which...
It is known that quantum field theories defined on curved spacetimes develop quantum anomalies of a trace of the energy-momentum tensor, called trace anomalies. These anomalies can be classified by using cohomology analysis, which in 4D establishes three possible types of trace anomalies: Euler (or Gauss-Bonnet), Weyl and Pontryagin. While the appearance of Euler and Weyl trace anomalies is a...
Existence of the high mass pulsars PSR J1614-2230 and PSR J0348-0432 with masses of about 2 M_sun requires
a sufficiently stiff equation of state (EoS) of the stellar matter to fulfill this constraint.
We succeeded to explain the thermal evolution of compact stars with stiff hadronic EoS in the framework of the
``nuclear medium cooling" scenario. This requires an appropriate selection of...
An essential ingredient in the dynamical evolution of core-collapse supernovae and binary mergers of compact objects is the equation of state (EOS) of nuclear matter for densities up to 10 times the nuclear equilibrium density, temperatures up to 100 MeV, and lepton-to-baryon fractions in the range 0 to 0.6. Moreover, the EOS controls electron capture and neutrino emission rates and,...
We present a model where it is possible to generate cosmologically large domains of matter and antimatter separated by cosmologically large distances. Domain walls existed only in the early universe and later they disappeared. So the problem of domain walls in this model does not exist. These features are achieved through a postulated form of interaction between inflaton and a new scalar...
