Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Shigenori Seki"'
Publikováno v:
Nuclear Physics B, Vol 1004, Iss , Pp 116549- (2024)
We construct closed string vertex operators with various ghost numbers in addition to the conventional ones, using the Faddeev-Popov procedure for the gauge fixing of the conformal Killing group, from matter primary fields. We find that these operato
Externí odkaz:
https://doaj.org/article/e8ba8edbee7949d980dc5a0ae7c64bf0
Publikováno v:
Physics Letters B, Vol 853, Iss , Pp 138657- (2024)
Two-point tree-level amplitudes in bosonic closed string theory are described by a correlation function within the BRST formalism, which respects manifest Lorentz and conformal invariance. In the derivation of the two-point amplitudes, we use the mos
Externí odkaz:
https://doaj.org/article/ebce387e8ac64a92a83e996c9bceab26
Publikováno v:
Nuclear Physics B, Vol 974, Iss , Pp 115647- (2022)
The Veneziano amplitude is derived from fixing one degree of freedom of PSL(2,R) symmetry by the insertion of a mostly BRST exact operator. Evaluating the five-point function which consists of four open string tachyons and this gauge fixing operator,
Externí odkaz:
https://doaj.org/article/36af48127bbf4f429796b0132d630561
Autor:
Shigenori Seki, Tomohiko Takahashi
Publikováno v:
Physics Letters B, Vol 822, Iss , Pp 136664- (2021)
We study two and three-point tree-level amplitudes of open strings. These amplitudes are reduced from higher-point correlation functions by using mostly BRST exact operators for gauge fixing. For simplicity, we focus on an open string tachyon. The tw
Externí odkaz:
https://doaj.org/article/64cf139e6be0446a97cbb9bc4758f52b
Autor:
Shigenori Seki, Tomohiko Takahashi
Publikováno v:
Physics Letters B, Vol 800, Iss , Pp - (2020)
So far we have considered that a two-point string amplitude vanishes due to the infinite volume of residual gauge symmetry. However recently Erbin-Maldacena-Skliros have suggested that the two-point amplitude can have non-zero value, because one can
Externí odkaz:
https://doaj.org/article/c9634435bd8a4177a93316db9e433be8
Autor:
Robi Peschanski, Shigenori Seki
Publikováno v:
Physics Letters B, Vol 758, Iss C, Pp 89-92 (2016)
We study the entanglement entropy between the two outgoing particles in an elastic scattering process. It is formulated within an S-matrix formalism using the partial wave expansion of two-body states, which plays a significant role in our computatio
Externí odkaz:
https://doaj.org/article/5b70849f57d243bd911ee855969cafbf
Publikováno v:
Physics Letters B, Vol 743, Iss , Pp 147-153 (2015)
In a scattering process, the final state is determined by an initial state and an S-matrix. We focus on two-particle scattering processes and consider the entanglement between these particles. For two types initial states, i.e., an unentangled state
Externí odkaz:
https://doaj.org/article/ddb7bff56b4e444b8276cd7ee8558ae4
Autor:
Shigenori Seki
Publikováno v:
Physics of Particles and Nuclei Letters. 17:663-665
Although one has trusted that the tree-level string two-point amplitudes vanish due to the infinite volume of residual gauge symmetry, recently the non-zero string two-point amplitudes have been pointed out in the path integral formalism. We consider
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2361e482607b69e0b6c5701e5dab7df3
https://doi.org/10.1134/s1547477120050313
https://doi.org/10.1134/s1547477120050313
Autor:
Shigenori Seki
Publikováno v:
INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING ICCMSE 2020.
We are interested in the entanglement entropy of the final state of two particles in an elastic scattering. One can expect that the entanglement is yielded by the interaction between the particles. Within an S-matrix theory, by using the partial wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6275017913f7831f02e1bc34aa6c1682
https://doi.org/10.1063/5.0047808
https://doi.org/10.1063/5.0047808
Autor:
Shigenori Seki, Robi Peschanski
Publikováno v:
Physical Review
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (7), pp.076012. ⟨10.1103/PhysRevD.100.076012⟩
Phys.Rev.D
Phys.Rev.D, 2019, 100 (7), pp.076012. ⟨10.1103/PhysRevD.100.076012⟩
Physical Review D
Physical Review D, American Physical Society, 2019, 100 (7), pp.076012. ⟨10.1103/PhysRevD.100.076012⟩
Phys.Rev.D
Phys.Rev.D, 2019, 100 (7), pp.076012. ⟨10.1103/PhysRevD.100.076012⟩
Entanglement of the two scattered particles is expected to occur in elastic collisions, even at high energy where they are in competition with inelastic ones. We study how to evaluate quantitatively the corresponding entanglement entropy $S_{\rm EE}.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae1646c75a6556a31cef7d2857758b0a
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