Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Levkov, Dmitry"'
Publikováno v:
Phys. Rev. D 105, 063019 (2022)
Black holes with masses $\approx 1\, M_{\odot}$ cannot be produced via stellar evolution. A popular scenario of their formation involves transmutation of neutron stars - by accumulation of dark matter triggering gravitational collapse in the star cen
Externí odkaz:
http://arxiv.org/abs/2112.09716
Publikováno v:
JHEP 08 (2020) 142
We use complex semiclassical method to compute scattering amplitudes of a point particle in dilaton gravity with a boundary. This model has nonzero minimal black hole mass $M_{cr}$. We find that at energies below $M_{cr}$ the particle trivially scatt
Externí odkaz:
http://arxiv.org/abs/2006.03606
Publikováno v:
JHEP 2020, 184 (2020)
We point out that two-dimensional Russo-Susskind-Thorlacius (RST) model for evaporating black holes is locally equivalent - at the full quantum level - to flat-space Jackiw-Teitelboim (JT) gravity that was recently shown to be unitary. Globally, the
Externí odkaz:
http://arxiv.org/abs/2004.13745
Publikováno v:
JHEP 1712 (2017) 131
The smallest classically stable Q-balls are, in fact, generically metastable: in quantum theory they decay into free particles via collective tunneling. We derive general semiclassical method to calculate the rate of this process in the entire kinema
Externí odkaz:
http://arxiv.org/abs/1711.05279
Publikováno v:
JCAP 1710 (2017) 016
Small evaporating black holes were proposed to be dangerous inducing fast decay of the electroweak false vacuum. We observe that the flat-spectrum matter perturbations growing at the post-inflationary matter dominated stage can produce such black hol
Externí odkaz:
http://arxiv.org/abs/1704.05399
Publikováno v:
JHEP 1704 (2017) 108
We consider (1+1)-dimensional dilaton gravity with a reflecting dynamical boundary. The boundary cuts off the region of strong coupling and makes our model causally similar to the spherically-symmetric sector of multidimensional gravity. We demonstra
Externí odkaz:
http://arxiv.org/abs/1702.02576
Publikováno v:
JHEP 1512 (2015) 002
We propose a semiclassical method to calculate S-matrix elements for two-stage gravitational transitions involving matter collapse into a black hole and evaporation of the latter. The method consistently incorporates back-reaction of the collapsing a
Externí odkaz:
http://arxiv.org/abs/1503.07181
Autor:
Demidov, Sergei, Levkov, Dmitry
Publikováno v:
JHEP 06 (2015) 123
We develop a consistent semiclassical description of field-theoretic collision-induced tunneling at arbitrary high collision energies. As a playground we consider a (1+1)-dimensional false vacuum decay initiated by a collision of N particles at energ
Externí odkaz:
http://arxiv.org/abs/1503.06339
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