Results 11 to 20 of about 31,012 (277)
D-Branes in Para-Hermitian Geometries [PDF]
Universe, 2022 We introduce T-duality invariant versions of D-branes in doubled geometry using a global covariant framework based on para-Hermitian geometry and metric algebroids.
Vincenzo Emilio Marotta +1 more
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Physics Letters B, 1996 9 pages, 6 figures; uses harvmac and ...
Berenstein, David +4 more
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Journal of High Energy Physics, 2013 We study the dynamics of ultrarelativistic D-branes. The dominant phenomenon is bremsstrahlung: mild acceleration induced by closed string interactions triggers extremely rapid energy loss through radiation of massless closed strings. After characterizing bremsstrahlung from a general k-dimensional extended object in a D-dimensional spacetime, we ...
Bachlechner, Thomas C., Mcallister, Liam
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A novel solution to the gravitino problem
Journal of High Energy Physics, 2023 In a general phenomenological model with local supersymmetry, the amount of massive gravitinos produced in early universe tends to violate the known dark matter density bound by many orders of magnitude.
Yu-Cheng Qiu, S.-H. Henry Tye
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Journal of High Energy Physics, 2004 We study several different kinds of bound states built from D-branes and orientifolds. These states are to atoms what branonium - the bound state of a brane and its anti-brane - is to positronium, inasmuch as they typically involve a light brane bound to a much heavier object with conserved charges which forbid the system's decay.
C.P. Burgess (Physics Department +7 more
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Tachyon tunnelling in D-brane-anti-D-brane [PDF]
Journal of High Energy Physics, 2006 15 pages, 4 figures, Latex file, minor changes, reference ...
Bitaghsir, Kazem, Garousi, Mohammad R.
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Journal of Cosmology and Astroparticle Physics, 2014 Disformally coupled cosmologies arise from Dirac-Born-Infeld actions in Type II string theories, when matter resides on a moving hidden sector D-brane. Since such matter interacts only very weakly with the standard model particles, this scenario can provide a natural origin for the dark sector of the universe with a clear geometrical interpretation ...
Koivisto, Tomi +2 more
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Dual D-brane actions in nonrelativistic string theory
Journal of High Energy Physics, 2022 We study worldvolume actions for D-branes coupled to the worldvolume U(1) gauge field and Ramond-Ramond (RR) potentials in nonrelativistic string theory.
Stephen Ebert, Hao-Yu Sun, Ziqi Yan
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Cosmological creation of D-branes and anti-D-branes [PDF]
Journal of High Energy Physics, 2002 We argue that the early universe may be described by an initial state of space-filling branes and anti-branes. At high temperature this system is stable. At low temperature tachyons appear and lead to a phase transition, dynamics, and the creation of D-branes. These branes are cosmologically produced in a generic fashion by the Kibble mechanism.
Majumdar, Mahbub, Davis, Anne-Christine
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Understanding the open string pair production of the Dp/D0 system
Journal of High Energy Physics, 2023 Consider a system consisting of Dp and Dp′, placed parallel at a separation and with p − p′ = 2n (assuming p ≥ p′, the integer n ≥ 0 and p′ > 0). When either Dp or Dp′ carries a worldvolume electric flux, one in general expects a non-vanishing open ...
J. X. Lu
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