Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Issei Koga"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-19 (2023)
Abstract The emergence of a four-dimensional de Sitter (dS4) universe on an expanding bubble in the five-dimensional anti-de Sitter (AdS5) background has been suggested as a possible cosmological scenario. It is motivated by the difficulties in the r
Externí odkaz:
https://doaj.org/article/1e7737259ed846e997dce25c1c01a5a5
Autor:
Issei Koga, Yutaka Ookouchi
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-24 (2019)
Abstract We investigate the decay of metastable de Sitter, Minkowski and anti-de Sitter vacua catalyzed by a black hole and a cloud of strings. We apply the method to the creation of the four dimensional bubble universe in the five dimensional anti-d
Externí odkaz:
https://doaj.org/article/1729a8f132c24c3fa06efa89499b89d9
Publikováno v:
Physics Letters B, Vol 800, Iss , Pp - (2020)
We study the instability of the Higgs vacuum caused by a cloud of strings. By catalysis, the decay rate of the vacuum is highly enhanced and, when the energy density of the cloud is larger than the critical value, a semi-classical vacuum decay occurs
Externí odkaz:
https://doaj.org/article/90b103e7bb14469a8df70d272e004811
Publikováno v:
Physical Review D. 105
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5a1cb3e5afdf607f6769f287d72352
https://doi.org/10.1103/physrevd.105.124044
https://doi.org/10.1103/physrevd.105.124044
Autor:
Issei Koga, Yutaka Ookouchi
Publikováno v:
Physical Review
We investigate the bubble nucleation in five dimensional spacetime catalyzed by quintessence. We especially focus on decay of a metastable Minkowski vacuum to an anti-de Sitter vacuum and study dynamics of the bubble on which four dimensional expandi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a0558ec51b44a1d571b965b2d245d34
http://arxiv.org/abs/2011.07437
http://arxiv.org/abs/2011.07437
Autor:
Yutaka Ookouchi, Issei Koga
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-24 (2019)
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-24 (2019)
We investigate the decay of metastable de Sitter, Minkowski and anti-de Sitter vacua catalyzed by a black hole and a cloud of strings. We apply the method to the creation of the four dimensional bubble universe in the five dimensional anti-de Sitter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e892b70d04ae31ee5809e456d5a072a7
https://doi.org/10.1007/jhep10(2019)281
https://doi.org/10.1007/jhep10(2019)281
Autor:
Issei Koga, Kenji Ono
Publikováno v:
Communications in Computer and Information Science ISBN: 9783030302832
ISIP
ISIP
Estimating a form of equation that explains data is very useful to understand various physical, chemical, social, and biological phenomena. One effective approach for finding the form of an equation is to solve the symbolic regression problem using g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc56d4cc12ba8c0f5378fb1cc86ed4ce
https://doi.org/10.1007/978-3-030-30284-9_6
https://doi.org/10.1007/978-3-030-30284-9_6
Publikováno v:
Physics Letters B, Vol 800, Iss, Pp-(2020)
Physics Letters
Physics Letters
We study the instability of the Higgs vacuum caused by a cloud of strings. By catalysis, the decay rate of the vacuum is highly enhanced and, when the energy density of the cloud is larger than the critical value, a semi-classical vacuum decay occurs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9977e0fabd37bca63fc27f7a6ab9dea6
Publikováno v:
Japanese Journal of Radiological Technology. 41:55-62
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc64170afcdc083792225c647568eeae
https://doi.org/10.6009/jjrt.kj00001371913
https://doi.org/10.6009/jjrt.kj00001371913
Publikováno v:
RADIOISOTOPES. 32:34-37
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::353c7174871d74a76f25d2ea84dfce9c
https://doi.org/10.3769/radioisotopes.32.34
https://doi.org/10.3769/radioisotopes.32.34