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Title: On vanishing two loop cosmological constants in nonsupersymmetric strings

Abstract

It has recently been suggested that in certain special nonsupersymmetric type II string compactifications, at least the first two perturbative contributions to the cosmological constant {Lambda} vanish. Support for perturbative vanishing beyond 1-loop (as well as evidence for the absence of some nonperturbative contributions) has come from duality arguments. There was also a direct 2-loop computation which was incomplete; in this note we explain the deficiency of the previous 2-loop calculation and discuss the complete 2-loop computation in two different models. The corrected analysis yields a vanishing 2-loop contribution to {Lambda} in these models.

Authors:
;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Contracts DE-AC03-76SF00098 and DE-AC03-786SF00515, OJI Award; National Science Foundation Grant PHY-94-07194; A.P. Sloan Foundation Fellowship (US)
OSTI Identifier:
836539
Report Number(s):
LBNL-42248
R&D Project: PTHOPS; TRN: US0500623
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Journal of High Energy Physics
Additional Journal Information:
Journal Issue: 1; Other Information: Submitted to Journal of High Energy Physics: No.1; Journal Publication Date: 04/21/1999; PBD: 16 Oct 1998
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COSMOLOGICAL CONSTANT; DUALITY; LAWRENCE BERKELEY LABORATORY

Citation Formats

Kachru, Shamit, and Silverstein, Eva. On vanishing two loop cosmological constants in nonsupersymmetric strings. United States: N. p., 1998. Web.
Kachru, Shamit, & Silverstein, Eva. On vanishing two loop cosmological constants in nonsupersymmetric strings. United States.
Kachru, Shamit, and Silverstein, Eva. Fri . "On vanishing two loop cosmological constants in nonsupersymmetric strings". United States. https://www.osti.gov/servlets/purl/836539.
@article{osti_836539,
title = {On vanishing two loop cosmological constants in nonsupersymmetric strings},
author = {Kachru, Shamit and Silverstein, Eva},
abstractNote = {It has recently been suggested that in certain special nonsupersymmetric type II string compactifications, at least the first two perturbative contributions to the cosmological constant {Lambda} vanish. Support for perturbative vanishing beyond 1-loop (as well as evidence for the absence of some nonperturbative contributions) has come from duality arguments. There was also a direct 2-loop computation which was incomplete; in this note we explain the deficiency of the previous 2-loop calculation and discuss the complete 2-loop computation in two different models. The corrected analysis yields a vanishing 2-loop contribution to {Lambda} in these models.},
doi = {},
journal = {Journal of High Energy Physics},
number = 1,
volume = ,
place = {United States},
year = {1998},
month = {10}
}