Results 1  10
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212
Recombination of intersecting Dbranes by local tachyon condensation
 JHEP 0306
"... We provide a simple low energy description of recombination of intersecting Dbranes using super YangMills theory. The recombination is realized by condensation of an offdiagonal tachyonic fluctuation localized at the intersecting point. The recombination process is equivalent to braneantibrane a ..."
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Cited by 36 (1 self)
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We provide a simple low energy description of recombination of intersecting Dbranes using super YangMills theory. The recombination is realized by condensation of an offdiagonal tachyonic fluctuation localized at the intersecting point. The recombination process is equivalent to brane
Contents
"... Abstract: We provide a simple low energy description of recombination of intersecting Dbranes using super YangMills theory. The recombination is realized by condensation of an offdiagonal tachyonic fluctuation localized at the intersecting point. The recombination process is equivalent to branea ..."
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Abstract: We provide a simple low energy description of recombination of intersecting Dbranes using super YangMills theory. The recombination is realized by condensation of an offdiagonal tachyonic fluctuation localized at the intersecting point. The recombination process is equivalent to brane
Exchange vs. OffDiagonal Interaction Fluctuations
, 2000
"... In a HartreeFock picture, itinerant ferromagnetism results from a competition between kinetic and exchange energy, with the magnetized state being favored at large interaction strength. In a recent paper [1] we showed that in contrast to this average effect, fluctuations of offdiagonal interaction ..."
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In a HartreeFock picture, itinerant ferromagnetism results from a competition between kinetic and exchange energy, with the magnetized state being favored at large interaction strength. In a recent paper [1] we showed that in contrast to this average effect, fluctuations of offdiagonal
Spectral form factor of hyperbolic systems: leading offdiagonal approximation
 J. Phys. A
"... The spectral fluctuations of a quantum Hamiltonian system with timereversal symmetry are studied in the semiclassical limit by using periodicorbit theory. It is found that, if long periodic orbits are hyperbolic and uniformly distributed in phase space, the spectral form factor K(τ) agrees with th ..."
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Cited by 5 (0 self)
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with the GOE prediction of randommatrix theory up to second order included in the time τ measured in units of the Heisenberg time (leading offdiagonal approximation). Our approach is based on the mechanism of periodicorbit correlations discovered recently by Sieber and Richter [1]. By reformulating
Powerlaw Localization in 2D, 3D with Offdiagonal Disorder
, 2001
"... We describe nonconventional localization of the midband E = 0 state in square and cubic finite bipartite lattices with offdiagonal disorder by solving numerically the linear equations for the corresponding amplitudes. This state is shown to display multifractal fluctuations, having many sparse pea ..."
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We describe nonconventional localization of the midband E = 0 state in square and cubic finite bipartite lattices with offdiagonal disorder by solving numerically the linear equations for the corresponding amplitudes. This state is shown to display multifractal fluctuations, having many sparse
Quasi 1 and 2d Dilute Bose Gas in Magnetic Traps: Existence of OffDiagonal Order and Anomalous Quantum Fluctuations
, 1998
"... Current magnetic traps can be made so anisotropic that the atomic gas trapped inside behaves like quasi one or two dimensional system. Unlike the homogeneous case, quantum phase fluctuations do not destroy macroscopic offdiagonal order of trapped Bose gases in d ≤ 2. In the dilute limit, quantum fl ..."
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Cited by 3 (0 self)
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Current magnetic traps can be made so anisotropic that the atomic gas trapped inside behaves like quasi one or two dimensional system. Unlike the homogeneous case, quantum phase fluctuations do not destroy macroscopic offdiagonal order of trapped Bose gases in d ≤ 2. In the dilute limit, quantum
Rolling Tachyon and Fields on the Brane
, 2002
"... We analyze the decay of an unstable Dbrane (or pair brane antibrane). It is considered a BornInfeld type action for spatially homogeneous tachyon interacting with gauge and scalar fields. For the case of the homogeneous fields we solve the equations of motion exactly. Treating fluctuations like ..."
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We analyze the decay of an unstable Dbrane (or pair brane antibrane). It is considered a BornInfeld type action for spatially homogeneous tachyon interacting with gauge and scalar fields. For the case of the homogeneous fields we solve the equations of motion exactly. Treating fluctuations like
Strings at the Tachyonic Vacuum
, 2001
"... We study the worldvolume effective action of Dpbrane at the tachyonic vacuum which is equivalent to the zero tension limit. Using the Hamiltonian formalism we discuss the algebra of constraints and show that there is a nontrivial ideal of the algebra which corresponds to Virasoro like constraints ..."
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of different background fields and fluctuations around the tachyonic vacuum is presented. 1
Cosmology of the Tachyon in Brane Inflation
, 2006
"... Abstract: In certain implementations of the brane inflationary paradigm, the exit from inflation occurs when the branes annihilate through tachyon condensation. We investigate various cosmological effects produced by this tachyonic era. We find that only a very small region of the parameter space (c ..."
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Cited by 1 (0 self)
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(corresponding to slowroll with tiny inflaton mass) allows for the tachyon to contribute some efolds to inflation. In addition, nonadiabatic density perturbations are generated at the end of inflation. When the brane is moving relativistically this contribution can be of the same order as fluctuations
Non Abelian Tachyon Kinks
, 904
"... Abstract: Starting from the action of two coincident nonBPS D9branes, we investigate kink configurations of the U(2) matrix tachyon field. We consider both Str and T r prescriptions for the trace over gauge indices of the nonBPS action. Nonabelian tachyon condensation in the theory with T r presc ..."
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prescription, and the resulting fluctuations about the kink profile, are shown to give rise to a theory of two coincident BPS D8branes. This is a natural nonabelian generalization of Sen’s mechanism of tachyon condensation on a single nonBPS Dpbrane yielding a single BPS brane of codimesion one
Results 1  10
of
212