Zobrazeno 1 - 10
of 139 034
pro vyhledávání: '"hep-th"'
Autor:
Ashoorioon, Amjad, Davari, Zahra
Publikováno v:
The Astrophysical Journal, Volume 959, Number 2, 2023
We study varying forms of viscous dark matter and try to address the intriguing tensions of the standard model of cosmology with recent cosmological data, including the Hubble and $S_8$ tensions. We note that by assuming the dark matter viscosity dep
Externí odkaz:
http://arxiv.org/abs/2303.06627
We analyze the transformation of the polarization of a photon propagating along an arbitrary null geodesic in Kerr geometry. The motivation comes from the problem of an observer trying to communicate quantum information to another observer in Kerr sp
Externí odkaz:
http://arxiv.org/abs/1306.6292
Autor:
Huang, Yi-Zhi, Sadowski, Christopher
Publikováno v:
Journal of Algebra. 628:452-485
Given a weight-one element $u$ of a vertex operator algebra $V$, we construct an automorphism of the category of generalized $g$-twisted modules for automorphisms $g$ of $V$ fixing $u$. We apply this construction to the case that $V$ is an affine ver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bf039cb2df42723ef1ad9da1632a021
https://doi.org/10.1016/j.jalgebra.2023.03.030
https://doi.org/10.1016/j.jalgebra.2023.03.030
Autor:
Carlos R. Mafra, Oliver Schlotterer
Publikováno v:
Physics Reports. 1020:1-162
We give a comprehensive review of recent developments on using the pure spinor formalism to compute massless superstring scattering amplitudes at tree level. The main results of the pure spinor computations are placed into the context of related topi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b66aaa8ed47a55568dd935556ba4cd39
https://doi.org/10.1016/j.physrep.2023.04.001
https://doi.org/10.1016/j.physrep.2023.04.001
Publikováno v:
Astrophysics. :75-94
Kantowski-Sachs perfect fluid cosmological model is explored in modified gravity with functional form $f(R, T)$=$f_1(R)$+$f_2(T)$ where $R$ is Ricci scalar, and $T$ is the trace of the energy-momentum tensor. With this functional form, three differen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8608e3406465247cbadb5b855874dabc
https://doi.org/10.54503/0571-7132-2023.66.1-75
https://doi.org/10.54503/0571-7132-2023.66.1-75
Autor:
Geloun, Joseph Ben, Ramgoolam, Sanjaye
Publikováno v:
Algebraic Combinatorics. 6:547-594
We define solvable quantum mechanical systems on a Hilbert space spanned by bipartite ribbon graphs with a fixed number of edges. The Hilbert space is also an associative algebra, where the product is derived from permutation group products. The exis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43150b2e073685536e0c9edf80ef98f3
https://doi.org/10.5802/alco.254
https://doi.org/10.5802/alco.254
Autor:
Shirokov, Ilya
Publikováno v:
Programming and Computer Software. 49:122-130
We propose a new symbolic algorithm and a C++ program for generating and calculating supersymmetric Feynman diagrams for ${\cal N}=1$ supersymmetric electrodynamics regularized by higher derivatives in four dimensions. According to standard rules, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::34cd505f535cfbaabd560516edecafe2
https://doi.org/10.1134/s0361768823020147
https://doi.org/10.1134/s0361768823020147
Fitting Power Spectrum of Scalar Perturbations for Primordial Black Hole Production during Inflation
Autor:
Daniel Frolovsky, Sergei V. Ketov
Publikováno v:
Astronomy. 2:47-57
We propose a simple analytic fit for the power spectrum of scalar (curvature) perturbations during inflation, in order to describe slow roll of inflaton and formation of primordial black holes in the early universe, in the framework of single-field m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3597fb99652030315d0a6557b33e5dbd
https://doi.org/10.3390/astronomy2010005
https://doi.org/10.3390/astronomy2010005
Publikováno v:
INSPIRE-HEP
We review the study, on the lattice, of the Green-Schwarz gauge-fixed string action describing worldsheet fluctuations about the minimal surface holographically dual to the null cusp Wilson loop, useful to evaluate the cusp anomaly of N = 4 super Yan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b28366edd9df5a7ba29aad9e30bd01ac
https://doi.org/10.1140/epjs/s11734-023-00769-w
https://doi.org/10.1140/epjs/s11734-023-00769-w
Publikováno v:
Theoretical and Mathematical Physics. 214:446-455
Machine learning (ML) in its current form implies that an answer to any problem can be well approximated by a function of a very peculiar form: a specially adjusted iteration of Heavyside theta-functions. It is natural to ask if the answers to the qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::381e1e7d739d98e9512509862504294d
https://doi.org/10.1134/s0040577923030091
https://doi.org/10.1134/s0040577923030091