Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Seki, Shigenori"'
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:
http://arxiv.org/abs/2402.07464
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:
http://arxiv.org/abs/2402.06179
The Veneziano amplitude is derived from fixing one degree of freedom of $PSL(2,\mathbb{R})$ 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 fixin
Externí odkaz:
http://arxiv.org/abs/2109.08433
Autor:
Seki, Shigenori, Takahashi, Tomohiko
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:
http://arxiv.org/abs/2108.05628
Autor:
Seki, Shigenori, Takahashi, Tomohiko
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:
http://arxiv.org/abs/1909.03672
Autor:
Peschanski, Robi, Seki, Shigenori
Publikováno v:
Phys. Rev. D 100, 076012 (2019)
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:
http://arxiv.org/abs/1906.09696
Publikováno v:
In Nuclear Physics, Section B January 2022 974
Autor:
Peschanski, Robi, Seki, Shigenori
Publikováno v:
Phys. Lett. B758 (2016) 89-92
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:
http://arxiv.org/abs/1602.00720
Publikováno v:
Phys. Lett. B743 (2015) 147-153
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:
http://arxiv.org/abs/1412.7894
Autor:
Seki, Shigenori, Sin, Sang-Jin
Publikováno v:
Phys.Lett. B735 (2014) 272-276
We study the causal structure of the minimal surface of the four-gluon scattering, and find a world-sheet wormhole parametrized by Mandelstam variables, thereby demonstrate the EPR = ER relation for gluon scattering. We also propose that scattering a
Externí odkaz:
http://arxiv.org/abs/1404.0794