Results 21 to 30 of about 38,307 (119)

Dirichlet Branes on Orbifolds [PDF]

open access: yes, 2000
The D-brane spectrum of a class of $\Zop_2$ orbifolds of toroidally compactified Type IIA and Type IIB string theory is analysed systematically. The corresponding K-theory groups are determined and complete agreement is found. The charge densities of the
Alekseev   +46 more
core   +2 more sources

Hitchin Functionals in N=2 Supergravity [PDF]

open access: yes, 2005
We consider type II string theory in space-time backgrounds which admit eight supercharges and can be characterized by the existence of an SU(3) x SU(3) structure.
Grana, Mariana   +2 more
core   +5 more sources

Differentiable Genetic Programming

open access: yes, 2016
We introduce the use of high order automatic differentiation, implemented via the algebra of truncated Taylor polynomials, in genetic programming. Using the Cartesian Genetic Programming encoding we obtain a high-order Taylor representation of the ...
Biscani, Francesco   +2 more
core   +1 more source

D-brane Spectrum and K-theory Constraints of D=4, N=1 Orientifolds [PDF]

open access: yes, 2006
We study the spectrum of stable BPS and non-BPS D-branes in Z_2 x Z_2 orientifolds for all choices of discrete torsion between the orbifold and orientifold generators.
A. Dabholkar   +39 more
core   +4 more sources

Universal Kaluza-Klein reductions of type IIB to N=4 supergravity in five dimensions

open access: yes, 2010
We construct explicit consistent Kaluza-Klein reductions of type IIB supergravity on HK_4 x S^1, where HK_4 is an arbitrary four-dimensional hyper-Kaehler manifold, and on SE5, an arbitrary five-dimensional Sasaki-Einstein manifold. In the former case we
Gauntlett, Jerome P., Varela, Oscar
core   +1 more source

Exploring many-body localization in quantum systems coupled to an environment via Wegner-Wilson flows

open access: yes, 2019
Inspired by recent experiments on many-body localized systems coupled to an environment, we apply a Flow Equation method to study the problem of a disorder chain of spinless fermions, coupled via density-density interactions to a second clean chain of ...
Kelly, Shane P.   +2 more
core   +2 more sources

Nonequilibrium dynamics of spin-boson models from phase space methods

open access: yes, 2017
An accurate description of the nonequilibrium dynamics of systems with coupled spin and bosonic degrees of freedom remains theoretically challenging, especially for large system sizes and in higher than one dimension.
Orioli, A. Piñeiro   +3 more
core   +1 more source

Bootstrapping Mixed Correlators in the Five Dimensional Critical O(N) Models [PDF]

open access: yes, 2016
We use the conformal bootstrap approach to explore $5D$ CFTs with $O(N)$ global symmetry, which contain $N$ scalars $\phi_i$ transforming as $O(N)$ vector.
Li, Zhijin, Su, Ning
core   +3 more sources

NNLO Logarithmic Expansions and Precise Determinations of the Neutral Currents near the Z Resonance at the LHC: The Drell-Yan case [PDF]

open access: yes, 2007
We present a comparative study of the invariant mass and rapidity distributions in Drell-Yan lepton pair production, with particular emphasis on the role played by the QCD evolution. We focus our study around the Z resonance ($50
  +19 more
core   +2 more sources

Comparison of post-Newtonian templates for extreme mass ratio inspirals

open access: yes, 2013
Extreme mass ratio inspirals (EMRIs), the inspirals of compact objects into supermassive black holes, are important gravitational wave sources for the Laser Interferometer Space Antenna (LISA).
Choudhary, Ashok   +3 more
core   +1 more source

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