منابع مشابه
Cosmic D-strings as Axionic D-term Strings
In this work we derive non-singular BPS string solutions from an action that captures the essential features of aD−brane-anti-D−brane system compactified to four dimensions. The model we consider is a supersymmetric abelian Higgs model with a D−term potential coupled to an axion-dilaton multiplet. The strings in question are axionic D−term strings which we identify with the D−strings of type II...
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P-term potentials can give rise to Nielsen-Olesen or semi-local cosmic strings. We present a general analysis of these cosmic strings where we derive the Bogomol’nyi equations and field profiles for both types of string and discuss their stability. We give an analysis of the fermionic zero modes that could live on the strings and a brief discussion of the inflationary period preceding their for...
متن کاملStrings as Solitons & Black Holes as Strings
Supersymmetric closed string theories contain an infinite tower of BPS-saturated, oscillating, macroscopic strings in the perturbative spectrum. When these theories have dual formulations, this tower of states must exist nonperturbatively as solitons in the dual theories. We present a general class of exact solutions of low-energy supergravity that corresponds to all these states. After dimensi...
متن کاملDF-strings from D3D̄3 as Cosmic Strings
We study Dirac-Born-Infeld type effective field theory of a complex tachyon and U(1)×U(1) gauge fields describing a D3D̄3 system. Classical solutions of straight global and local DFstrings with quantized vorticity are found and are classified into two types by the asymptotic behavior of the tachyon amplitude. For sufficiently large radial distances, one has linearlygrowing tachyon amplitude and ...
متن کاملConfining Strings with Topological Term
We consider several aspects of ‘confining strings’, recently proposed to describe the confining phase of gauge field theories. We perform the exact duality transformation that leads to the confining string action and show that it reduces to the Polyakov action in the semiclassical approximation. In 4D we introduce a ‘θ-term’ and compute the low-energy effective action for the confining string i...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2005
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.72.105002