Zobrazeno 1 - 10
of 117
pro vyhledávání: '"D. G. Levkov"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-36 (2023)
Abstract We compute the probability of producing n particles from few colliding particles in the unbroken (3 + 1)-dimensional λϕ 4 theory. To this end we numerically implement semiclassical method of singular solutions which works at n ≫ 1 in the
Externí odkaz:
https://doaj.org/article/ac7558724c774e0885dcee3056547052
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-39 (2022)
Abstract We consider oscillons — localized, quasiperiodic, and extremely long-living classical solutions in models with real scalar fields. We develop their effective description in the limit of large size at finite field strength. Namely, we note
Externí odkaz:
https://doaj.org/article/f744fc5d24ec468c9bba77c6f1978b0b
Publikováno v:
Journal of High Energy Physics
We compute the probability of producing $n$ particles from few colliding particles in the unbroken $(3+1)$-dimensional $\lambda\phi^4$ theory. To this end we numerically implement semiclassical method of singular solutions which works at ${n \gg 1}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::730d893279c35b310fba1f89aa0d81d4
We develop a numerical method to compute the probabilities of multiparticle production in weakly coupled scalar theories. Our technique is based on D.T. Son's semiclassical method of singular solutions. Applying it to the process $1 \to n$ in the unb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::659f55a6a878bf75fda134c342b0bcac
http://arxiv.org/abs/2111.04760
http://arxiv.org/abs/2111.04760
Light bosonic (axion-like) dark matter may form Bose stars - clumps of nonrelativistic Bose-Einstein condensate supported by self-gravity. We study rotating Bose stars composed of condensed particles with nonzero angular momentum $l$. We analytically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffcec20d281d3bf7f888abc4e0684212
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 8, Pp 1-30 (2020)
Journal of High Energy Physics
Journal of High Energy Physics
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7074a674e298900d98abba4db6162fcb
https://doi.org/10.1007/jhep08(2020)142
https://doi.org/10.1007/jhep08(2020)142
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2020, Iss 6, Pp 1-31 (2020)
Journal of High Energy Physics, Vol 2020, Iss 6, Pp 1-31 (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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fa267ca5ad367c8169e586d7a081d31
http://repo.scoap3.org/api
http://repo.scoap3.org/api
We study parametric instability of compact axion dark matter structures decaying to radiophotons. Corresponding objects - Bose (axion) stars, their clusters, and clouds of diffuse axions - form abundantly in the postinflationary Peccei-Quinn scenario
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20bf949367e5ef3aaabd7fae55cea7e0
http://arxiv.org/abs/2004.05179
http://arxiv.org/abs/2004.05179
Profiles of static solitons in one-dimensional scalar field theory satisfy the same equations as trajectories of a fictitious particle in multidimensional mechanics. We argue that the structure and properties of the solitons are essentially different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37f39992290488f4d85bfea3ed1e0b5e
Publikováno v:
The Astrophysical Journal. 925:109
We advance theoretical methods for studying propagation effects in the Fast Radio Burst (FRB) spectra. We derive their autocorrelation function in the model with diffractive lensing and strong Kolmogorov-type scintillations and analytically obtain th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::275210a49cc8174d8ad81e56405fcad8
https://doi.org/10.3847/1538-4357/ac3250
https://doi.org/10.3847/1538-4357/ac3250