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Quantum Phase Transitions and New Scales in QCD-Like Theories

Description: It is commonly believed that in confining vector-like gauge theories the center and chiral symmetry realizations are parametrically entangled, and if phase transitions occur, they must take place around the strong scale {Lambda}{sup -1} of the gauge theory. We demonstrate that (non-thermal) vector-like theories formulated on R{sup 3} x S{sup 1} where S{sup 1} is a spatial circle exhibit new dynamical scales and new phenomena. There are chiral phase transitions taking place at {Lambda}{sup -1}/N… more
Date: July 3, 2008
Creator: Unsal, Mithat
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exact Attractive Non-BPS STU Black Holes

Description: We develop some properties of the non-BPS attractive STU black hole. Our principle result is the construction of exact solutions for the moduli, the metric and the vectors in terms of appropriate harmonic functions. In addition, we find a spherically-symmetric attractor carrying p{sup 0} (D6 brane) and q{sub a} (D2 brane) charges by solving the non-BPS attractor equation (which we present in a particularly compact form) and by minimizing an effective black hole potential. Finally, we make an ar… more
Date: July 18, 2006
Creator: Kallosh, Renata; /Stanford U., Phys. Dept.; Sivanandam, Navin; Soroush, Masoud & /Stanford U., Phys. Dept. /SLAC
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

R^4 Counterterm and E_{7(7)} Symmetry in Maximal Supergravity

Description: The coefficient of a potential R{sup 4} counterterm in N = 8 supergravity has been shown previously to vanish in an explicit three-loop calculation. The R{sup 4} term respects N = 8 supersymmetry; hence this result poses the question of whether another symmetry could be responsible for the cancellation of the three-loop divergence. In this article we investigate possible restrictions from the coset symmetry E{sub 7(7)}/SU(8), using a double-soft scalar limit relation derived recently by Arkani-… more
Date: July 6, 2011
Creator: Broedel, Johannes; /Potsdam, Max Planck Inst. /Leibniz U., Hannover & Dixon, Lance J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

D-Branes in Curved Space

Description: This thesis is a study of D-branes in string compactifications. In this context, D-branes are relevant as an important component of the nonperturbative spectrum, as an incisive probe of these backgrounds, and as a natural stringy tool for localizing gauge interactions. In the first part of the thesis, we discuss half-BPS D-branes in compactifications of type II string theory on Calabi-Yau threefolds. The results we describe for these objects are pertinent both in their role as stringy brane-wor… more
Date: July 6, 2005
Creator: McGreevy, John Austen
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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