A new approach to the complex-action problem and its application to a nonperturbative study of superstring theory

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dc.creatorAnagnostopoulos, K. N.
dc.creatorNishimura, J.
dc.date2001-08-07
dc.date2003-01-30
dc.date.accessioned2026-07-07T11:31:54Z
dc.date.available2026-07-07T11:31:54Z
dc.descriptionMonte Carlo simulations of a system whose action has an imaginary part are considered to be extremely difficult. We propose a new approach to this `complex-action problem', which utilizes a factorization property of distribution functions. The basic idea is quite general, and it removes the so-called overlap problem completely. Here we apply the method to a nonperturbative study of superstring theory using its matrix formulation. In this particular example, the distribution function turns out to be positive definite, which allows us to reduce the problem even further. Our numerical results suggest an intuitive explanation for the dynamical generation of 4d space-time.
dc.description7 pages, 4 figures, PRD version somewhat extended from the original version
dc.identifierhttps://arxiv.org/abs/hep-th/0108041
dc.identifierhttp://arxiv.org/abs/hep-th/0108041
dc.identifierPhys.Rev.D66:106008,2002
dc.identifierdoi:10.1103/PhysRevD.66.106008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197424
dc.subjectHigh Energy Physics - Theory
dc.subjectStatistical Mechanics
dc.subjectHigh Energy Physics - Lattice
dc.subjectNuclear Theory
dc.titleA new approach to the complex-action problem and its application to a nonperturbative study of superstring theory
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