skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Cubic interaction vertices and one-loop self-energy in the stable string bit model

Publication Date:
Sponsoring Org.:
OSTI Identifier:
Grant/Contract Number:
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 4; Related Information: CHORUS Timestamp: 2017-08-31 10:44:51; Journal ID: ISSN 2470-0010
American Physical Society
Country of Publication:
United States

Citation Formats

Chen, Gaoli. Cubic interaction vertices and one-loop self-energy in the stable string bit model. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.046021.
Chen, Gaoli. Cubic interaction vertices and one-loop self-energy in the stable string bit model. United States. doi:10.1103/PhysRevD.96.046021.
Chen, Gaoli. Thu . "Cubic interaction vertices and one-loop self-energy in the stable string bit model". United States. doi:10.1103/PhysRevD.96.046021.
title = {Cubic interaction vertices and one-loop self-energy in the stable string bit model},
author = {Chen, Gaoli},
abstractNote = {},
doi = {10.1103/PhysRevD.96.046021},
journal = {Physical Review D},
number = 4,
volume = 96,
place = {United States},
year = {Thu Aug 31 00:00:00 EDT 2017},
month = {Thu Aug 31 00:00:00 EDT 2017}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on August 31, 2018
Publisher's Accepted Manuscript

Save / Share:
  • It is shown that there is an equivalence between the effective equationsof motion for the massless modes of the string and the conditions ofconformal invariance which correspond to the two/minus/dimensional sigma/minus/model ifthe one/minus/loop string contributions to the theory of open and closed bosonicstrings are taken into account. (AIP)
  • Various one-loop corrections to the four-graviton interaction in type-II superstring theory and heterotic string theory are sorted out and some of them explicitly calculated. In particular, the leading correction for ..cap alpha..'..-->..0 from the heterotic amplitude is obtained. Also the nonleading nonanalytic corrections are discussed and their correspondence to the one-loop supergravity diagrams is used for their classification.
  • We study a prototype supergravity model from superstrings, with three generations of matter fields in the untwisted sector, nonperturbatively induced supersymmetry breaking and including threshold corrections in conformity with modular invariance. The scale degeneracy of the vacuum is lifted at the one-loop level, allowing a determination of the fundamental parameters of the effective low-energy theory.
  • We present an exact numerical computation of the one-loop correction of the string tension for the Nielsen-Olesen vortex in the Abelian Higgs model. The computation proceeds via the computation of the Euclidean Green's function for the gauge, Higgs, and Faddeev-Popov fields using mode functions, and taking the appropriate trace. Renormalization is an essential part of this computation. It is done by removing leading order contributions from the numerical results so as to make these finite, and to add the divergent parts back, after suitable regularization and renormalization. We encounter and solve some problems which are specific to gauge theories andmore » topological solutions. The corrections to the energy are found to be sizable, but still smaller than the classical energy as long as g{sup 2} is smaller than unity.« less
  • In contrast with previous expectations, covariant overlap vertices are not always suitable for gauge-covariant formulations of bosonic string field theory with a reduced supplementary field content. This is demonstrated for the version of the theory suggested by Neveu, Schwarz, and West. The method to construct the interaction, as formulated by Neveu and West, fails at one level higher than these authors have considered as long as the reduced field content is retained. The condition for a general vertex to describe formally a local gauge-invariant interaction is derived. The solution for the action functional and the gauge transformation law is exhibitedmore » for all fields at once, to first order in the coupling constant. However, all these vertices seem to be unphysical.« less