Zobrazeno 1 - 10
of 2 032
pro vyhledávání: '"K. Narayan"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-42 (2024)
Abstract We study holographic volume complexity for various families of holographic cosmologies with Kasner-like singularities, in particular with AdS, hyperscaling violating and Lifshitz asymptotics. We find through extensive numerical studies that
Externí odkaz:
https://doaj.org/article/acf0840b92c94903b79f5c49528abb65
Autor:
K. Narayan, Hitesh K. Saini
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-18 (2024)
Abstract Following arXiv:2210.12963 [hep-th], we investigate aspects of the time evolution operator regarded as a density operator and associated entanglement-like structures in various quantum systems. These involve timelike separations and generica
Externí odkaz:
https://doaj.org/article/1c5abbf3bbe54a089b2ebade0b9b0cf0
Autor:
Kaberi Goswami, K. Narayan
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-33 (2024)
Abstract We continue the study of 4-dimensional Schwarzschild de Sitter black holes in the regime where the black hole mass is small compared with the de Sitter scale, following arXiv:2207.10724 [hep-th]. The de Sitter temperature is very low compare
Externí odkaz:
https://doaj.org/article/b20ff958a3bc400b9d552532ba907778
Autor:
D. E. Wasson, H. Stefenoni, S. F. Cueva, C. Lage, S. E. Räisänen, A. Melgar, M. Fetter, M. Hennessy, K. Narayan, N. Indugu, D. Pitta, C. Yarish, A. N. Hristov
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract This study investigated the effects of 67 species of macroalgae on methanogenesis and rumen fermentation in vitro. Specimens were analyzed for their effect on ruminal fermentation and microbial community profiles. Incubations were carried ou
Externí odkaz:
https://doaj.org/article/484f5a6d2b1c47b2a55024eec14f6711
Autor:
Kaberi Goswami, K. Narayan
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-28 (2022)
Abstract We study 4-dimensional Schwarzschild de Sitter black holes in the regime where the black hole mass is small compared with the de Sitter scale. Then the de Sitter temperature is very low compared with that of the black hole and we study the b
Externí odkaz:
https://doaj.org/article/1c398565f2e0456e82bf0b476c02b870
Autor:
M. Binsted, G. Iyer, P. Patel, N. T. Graham, Y. Ou, Z. Khan, N. Kholod, K. Narayan, M. Hejazi, S. Kim, K. Calvin, M. Wise
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 2533-2559 (2022)
This paper describes GCAM-USA v5.3_water_dispatch, an open-source model that represents key interactions across economic, energy, water, and land systems in a consistent global framework with subnational detail in the United States. GCAM-USA divides
Externí odkaz:
https://doaj.org/article/589f370c421f4545b98255acfcc5ddcf
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-31 (2022)
Abstract Following [1], we study quantum extremal surfaces in various families of cosmologies with Big-Crunch singularities, by extremizing the generalized entropy in 2-dimensional backgrounds which can be thought of as arising from dimensional reduc
Externí odkaz:
https://doaj.org/article/a174355c80c5498981b23bce63862fcb
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-28 (2021)
Abstract We study aspects of entanglement and extremal surfaces in various families of spacetimes exhibiting cosmological, Big-Crunch, singularities, in particular isotropic AdS Kasner. The classical extremal surface dips into the bulk radial and tim
Externí odkaz:
https://doaj.org/article/c43e4fc57891472a8a2c6efb3387e542
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 9, Pp 1-16 (2020)
Abstract We study extremal surfaces in the Schwarzschild de Sitter spacetime with real mass parameter. We find codim-2 timelike extremal surfaces stretching between the future and past boundaries that pass through the vicinity of the cosmological hor
Externí odkaz:
https://doaj.org/article/b077d83f2382492b831e09fb030e7927
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 8, Pp 1-30 (2020)
Abstract We study Big-Bang or -Crunch cosmological singularities in 2-dimensional dilaton-gravity-scalar theories, in general obtained by dimensional reduction of higher dimensional theories. The dilaton potential encodes information about the asympt
Externí odkaz:
https://doaj.org/article/7ef24fbf1b2c4a4a8c4cb0e1dbc3dcd3