Zobrazeno 1 - 10
of 117
pro vyhledávání: '"KISHIMOTO, Isao"'
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
Autor:
Kishimoto, Isao
In bosonic open string field theory, the spectrum around the numerical tachyon vacuum solution in Siegel gauge was investigated by Giusto and Imbimbo. Using their numerical method, we study the mass spectrum around two other solutions, which are ``do
Externí odkaz:
http://arxiv.org/abs/2308.10403
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:
Kishimoto, Isao
In bosonic open string field theory, we construct numerical universal solutions in $a$-gauge corresponding to ``double brane'' and ``ghost brane'' solutions in Siegel gauge in addition to the tachyon vacuum solution, and evaluate their gauge invarian
Externí odkaz:
http://arxiv.org/abs/2109.02003
Autor:
Kishimoto, Isao, Takahashi, Tomohiko
Using the level truncation method, we construct numerical solutions, which are twist even and SU(1,1) singlet, in the theory around the Takahashi-Tanimoto identity-based solution (TT solution) with a real parameter $a$ in the framework of bosonic ope
Externí odkaz:
http://arxiv.org/abs/2011.08378
We revisit the identity-based solutions for tachyon condensation in open bosonic string field theory (SFT) from the viewpoint of the sine-square deformation (SSD). The string Hamiltonian derived from the simplest solution includes the sine-square fac
Externí odkaz:
http://arxiv.org/abs/1809.01885
We study profiles and gauge invariant observables of classical solutions corresponding to a constant magnetic field on a torus in open string field theory. We numerically find that the profile is not discontinuous on the torus, although the solution
Externí odkaz:
http://arxiv.org/abs/1804.01284
Autor:
Asada, Mitsuru, Kishimoto, Isao
Publikováno v:
Prog Theor Exp Phys (2018)
In the framework of WZW-like open superstring field theory (SSFT) including the Ramond (R) sector whose action was constructed by Kunitomo and Okawa, we truncate the string fields in both the Neveu-Schwarz (NS) and R sectors up to the lowest massless
Externí odkaz:
http://arxiv.org/abs/1712.05935
Following the method recently proposed by Erler and Maccaferri, we construct solutions to the equation of motion of Witten's cubic string field theory, which describe constant magnetic field background. We study the boundary condition changing operat
Externí odkaz:
http://arxiv.org/abs/1610.05911