000534134 001__ 534134
000534134 003__ SzGeCERN
000534134 005__ 20230314180031.0
000534134 0247_ $$2DOI$$a10.1103/PhysRevD.65.103520
000534134 0248_ $$aoai:cds.cern.ch:534134$$pcerncds:CERN$$pcerncds:hep-ph$$pcerncds:CERN:FULLTEXT$$pcerncds:FULLTEXT
000534134 035__ $$9CERN annual report$$a2002-3.2272
000534134 035__ $$9SLAC$$a4831012
000534134 035__ $$9SPIRES$$a4831012
000534134 035__ $$9Inspire$$a581850
000534134 037__ $$9arXiv$$ahep-ph/0201155$$chep-ph
000534134 041__ $$aeng
000534134 084__ $$2CERN Library$$aTH-2002-041
000534134 088__ $$aCERN-TH-2002-041
000534134 100__ $$aCarter, Brandon$$uMeudon Observ.
000534134 245__ $$aThermal stabilization of superconducting sigma strings and their drum vortons
000534134 246__ $$aThermal Stabilisation of Superconducting Sigma Strings and their Drum Vortons$$iPreprint title
000534134 260__ $$c2002
000534134 269__ $$aGeneva$$bCERN$$c17 Jan 2002
000534134 300__ $$a16 p
000534134 340__ $$apaper
000534134 520__ $$aWe discuss various issues related to stabilized embedded strings in a thermal background. In particular, we demonstrate that such strings will generically become superconducting at moderately low temperatures, thus enhancing their stability. We then present a new class of defects - drum vortons - which arise when a small symmetry breaking term is added to the potential. We display these points within the context of the O(4) sigma model, relevant for hadrodynamics below the QCD scale. This model admits `embedded defects' (topological defect configurations of a simpler - in this case O(2) symmetric - model obtained by imposing an embedding constraint) that are unstable in the full model at zero temperature, but that can be stabilised (by electromagnetic coupling to photons) in a thermal gas at moderately high termperatures. It is shown here that below the embedded defect stabilisation threshold, there will still be stabilized cosmic string defects. However, they will not be of the symmetric embedded vortex type, but of an `asymmetric' vortex type, and are automatically superconducting. In the presence of weak symmetry breaking terms, such as arise naturally when using the O(4) model for hadrodynamics, the strings become the boundary of a new kind of cosmic sigma membrane, with tension given by the pion mass. The string current would then make it possible for a loop to attain a (classically) stable equilibrium state that differs from an ``ordinary'' vorton state by the presence of a sigma membrane stretched across it in a drum like configuration. Such defects will however be entirely destabilised if the symmetry breaking is too strong, as is found to be the case -- due to the rather large value of the pion mass -- in the hadronic application of the O(4) sigma model.
000534134 520__ $$9Inspire$$aWe discuss various issues related to stabilized embedded strings in a thermal background. In particular, we demonstrate that such strings will generically become superconducting at moderately low temperatures, thus enhancing their stability. We then present a new class of defects - drum vortons - which arise when a small symmetry breaking term is added to the potential. We display these points within the context of the O(4) sigma model, relevant for hadrodynamics below the QCD scale. This model admits `embedded defects' (topological defect configurations of a simpler - in this case O(2) symmetric - model obtained by imposing an embedding constraint) that are unstable in the full model at zero temperature, but that can be stabilised (by electromagnetic coupling to photons) in a thermal gas at moderately high termperatures. It is shown here that below the embedded defect stabilisation threshold, there will still be stabilized cosmic string defects. However, they will not be of the symmetric embedded vortex type, but of an `asymmetric' vortex type, and are automatically superconducting. In the presence of weak symmetry breaking terms, such as arise naturally when using the O(4) model for hadrodynamics, the strings become the boundary of a new kind of cosmic sigma membrane, with tension given by the pion mass. The string current would then make it possible for a loop to attain a (classically) stable equilibrium state that differs from an ``ordinary'' vorton state by the presence of a sigma membrane stretched across it in a drum like configuration. Such defects will however be entirely destabilised if the symmetry breaking is too strong, as is found to be the case -- due to the rather large value of the pion mass -- in the hadronic application of the O(4) sigma model.
000534134 595__ $$aCERN-TH
000534134 595__ $$aLANL EDS
000534134 595__ $$aOA
000534134 595__ $$aSIS COSCI2002
000534134 65017 $$2SzGeCERN$$aParticle Physics - Phenomenology
000534134 690C_ $$aARTICLE
000534134 690C_ $$aCERN
000534134 693__ $$aNot applicable$$eNot applicable
000534134 695__ $$9LANL EDS$$aHigh Energy Physics - Phenomenology
000534134 700__ $$aBrandenberger, Robert H.$$uBrown U.$$uCERN
000534134 700__ $$aDavis, Anne-Christine$$uCambridge U., DAMTP
000534134 710__ $$5TH
000534134 710__ $$5PH-TH
000534134 773__ $$c103520$$pPhys. Rev. D$$v65$$y2002
000534134 852__ $$cCERN ARC Library$$hCERN-TH-2002-041
000534134 859__ [email protected]
000534134 8564_ $$uhttp://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=aps&id=PhysRevD.65.103520$$yAPS Published version, local copy
000534134 8564_ $$uhttp://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=hep-ph&id=0201155$$yAccess to fulltext document
000534134 8564_ $$890029$$s302644$$uhttps://cds.cern.ch/record/534134/files/0201155.pdf$$yAccess to fulltext document
000534134 8564_ $$890029$$s183875$$uhttps://cds.cern.ch/record/534134/files/0201155.ps.gz$$yAccess to fulltext document
000534134 8564_ $$890024$$s159685$$uhttps://cds.cern.ch/record/534134/files/PhysRevD.65.103520.pdf$$yAPS Published version, local copy
000534134 8564_ $$82434454$$s270187$$uhttps://cds.cern.ch/record/534134/files/arXiv:hep-ph_0201155.pdf
000534134 916__ $$sn$$w200203$$ya2002
000534134 960__ $$a13
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000534134 980__ $$aARTICLE
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