Results 11 to 20 of about 185 (152)
TACHYON CONDENSATES AND ANISOTROPIC UNIVERSE [PDF]
Modern Physics Letters A, 1995 We investigate the cosmological solutions in closed bosonic string theory in the presence of nonzero tachyon condensate. We specifically obtain time-dependent solutions which describes an anisotropic universe. We also discuss the nature of such time-dependent solutions when small tachyon fluctuations around the condensate are taken into account.
Mahapatra, Swapna, Mukherji, Sudipta
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Loop corrected tachyon condensation [PDF]
Journal of High Energy Physics, 2001 We study loop corrections in boundary string field theory (BSFT). After commenting on problems with quantizing the tree level BSFT as an ordinary field theory, we discuss the tree level coupling to closed strings and define the loop corrections via factorization in the closed string channel.
Craps, Ben, Kraus, Per, Larsen, Finn
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Area Law Saturation of Entropy Bound from Perturbative Unitarity in Renormalizable Theories
Fortschritte der Physik, Volume 69, Issue 1, January 2021., 2021 Abstract We study the quantum information storage capacity of solitons and baryons in renormalizable quantum field theories that do not include gravity. We observe that a 't Hooft‐Polyakov magnetic monopole saturates the Bekenstein bound on information when the theory saturates the bound on perturbative unitarity.
Gia Dvali
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Cosmological signature of tachyon condensation [PDF]
Journal of High Energy Physics, 2008 We consider the dynamics of the open string tachyon condensation in a framework of the cubic fermionic String Field Theory including a non-minimal coupling with closed string massless modes, the graviton and the dilaton. Coupling of the open string tachyon and the dilaton is motivated by the open String Field Theory in a linear dilaton background and ...
Aref'eva, Irina, Koshelev, Alexey
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Imperfect Fluid Generalized Robertson Walker Spacetime Admitting Ricci‐Yamabe Metric
Advances in Mathematical Physics, Volume 2021, Issue 1, 2021., 2021 In the present paper, we investigate the nature of Ricci‐Yamabe soliton on an imperfect fluid generalized Robertson‐Walker spacetime with a torse‐forming vector field ξ. Furthermore, if the potential vector field ξ of the Ricci‐Yamabe soliton is of the gradient type, the Laplace‐Poisson equation is derived.
Ali H. Alkhaldi +4 more
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Thermodynamics and tachyon condensation of the dressed-dynamical unstable Dp-branes
European Physical Journal C: Particles and Fields, 2023 Using the boundary state formalism and thermo field dynamics approach, we study a Dp-brane at finite temperature in which the background Kalb–Ramond field, a U(1) gauge potential, and tachyon field are turned on together with a general tangential ...
Hamidreza Daniali
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Confinement of Fermions in Tachyon Matter at Finite Temperature
Advances in High Energy Physics, Volume 2021, Issue 1, 2021., 2021 We study a phenomenological model that mimics the characteristics of QCD theory at finite temperature. The model involves fermions coupled with a modified Abelian gauge field in a tachyon matter. It reproduces some important QCD features such as confinement, deconfinement, chiral symmetry, and quark‐gluon‐plasma (QGP) phase transitions.
Adamu Issifu +3 more
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Canonical analysis of geometrical action for Dp-brane
European Physical Journal C: Particles and Fields, 2021 In this short note we perform canonical analysis of geometrical action for Dp-brane. We also discuss tachyon condensation in case of the geometrical action for unstable D(p+1)-brane.
Josef Klusoň
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Particle Production in Tachyon Condensation [PDF]
Journal of High Energy Physics, 2004 We study particle production in the tachyon condensation process as described by different effective actions for the tachyon. By making use of invariant operators, we are able to obtain exact results for the density of produced particles, which is shown to depend strongly on the specific action.
ALBERGHI, GIAN LUIGI +2 more
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Tachyon condensation on the elliptic curve [PDF]
Nuclear Physics B, 2007 We use the framework of matrix factorizations to study topological B-type D-branes on the cubic curve. Specifically, we elucidate how the brane RR charges are encoded in the matrix factors, by analyzing their structure in terms of sections of vector bundles in conjunction with equivariant R-symmetry. One particular advantage of matrix factorizations is
Govindarajan, Suresh +3 more
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