http://prd.aps.org/ Recently published articles in Phys. Rev. D in the Table of Content section "String theory" en-us Copyright (c) 2009 The American Physical Society 2009-11-22T06:17:18-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-22T06:17:18-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevD.80.106005 Author(s): Allan Adams, Albion Lawrence, and Ian Swanson<br/>We construct exact two-dimensional conformal field theories, corresponding to closed string tachyon and metric profiles invariant under shifts in a null coordinate, which can be constructed from any two-dimensional renormalization group flow. These solutions satisfy first order equations of motion i...<br/>[Phys. Rev. D 80, 106005] Published Fri Nov 20, 2009 Allan Adams, Albion Lawrence, and Ian Swanson 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.106005 Phys. Rev. D 80, 106005 text/html article Physical Review D 80 10 2009-11-20T00:00:00-05:00 106005 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.106004 Author(s): Joseph P. Conlon and Eran Palti<br/>We study gauge threshold corrections for local grand unified theory models in IIB/F-theory. Consistency with holomorphy requirements of supergravity and the Kaplunovsky-Louis formula implies that the unification scale is enhanced by the bulk radius R from the string scale to M_{X} =RM_{S} . We argue...<br/>[Phys. Rev. D 80, 106004] Published Mon Nov 16, 2009 Joseph P. Conlon and Eran Palti 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.106004 Phys. Rev. D 80, 106004 text/html article Physical Review D 80 10 2009-11-16T00:00:00-05:00 106004 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.106003 Author(s): Keith R. Dienes and Michael Lennek<br/>In light of recent discussions of the string landscape, it is essential to understand the degree to which string theory is predictive. We argue that it is unlikely that the landscape as a whole will exhibit unique correlations amongst low-energy observables, but rather that different regions of the ...<br/>[Phys. Rev. D 80, 106003] Published Mon Nov 16, 2009 Keith R. Dienes and Michael Lennek 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.106003 Phys. Rev. D 80, 106003 text/html article Physical Review D 80 10 2009-11-16T00:00:00-05:00 106003 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.106002 Author(s): Christopher P. Herzog and Amos Yarom<br/>Superfluids support many different types of sound waves. We investigate the relation between the sound waves in a relativistic and a nonrelativistic superfluid by using hydrodynamics to calculate the various sound speeds. Then, using a particular holographic scalar gravity realization of a strongly ...<br/>[Phys. Rev. D 80, 106002] Published Thu Nov 12, 2009 Christopher P. Herzog and Amos Yarom 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.106002 Phys. Rev. D 80, 106002 text/html article Physical Review D 80 10 2009-11-12T00:00:00-05:00 106002 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.106001 Author(s): Yunseok Seo, Sang-jin Sin, and Wei-shui Xu<br/>We consider a holographic model constructed using the D4/D8-D8 [over ¯] brane configuration with a Neveu-Schwarz–Neveu-Schwarz background field. We study some properties of the effective field theory in this intersecting brane construction and calculate the effects of this Neveu-Schwarz–Neveu-S...<br/>[Phys. Rev. D 80, 106001] Published Tue Nov 10, 2009 Yunseok Seo, Sang-jin Sin, and Wei-shui Xu 2009-11-10T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.106001 Phys. Rev. D 80, 106001 text/html article Physical Review D 80 10 2009-11-10T00:00:00-05:00 106001 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086013 Author(s): Khireddine Nouicer and Youssef Sabri<br/>In this paper we study the effect of spacetime noncommutativity in the five-dimensional Randall-Sundrum braneworlds on the Casimir force acting on a pair of parallel plates. We show that the presence of a noncommutative scale length affects the nature of the Casimir force for small plate separation....<br/>[Phys. Rev. D 80, 086013] Published Fri Oct 30, 2009 Khireddine Nouicer and Youssef Sabri 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086013 Phys. Rev. D 80, 086013 text/html article Physical Review D 80 8 2009-10-30T00:00:00-04:00 086013 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086012 Author(s): Stephen D. H. Hsu<br/>While the number of metastable landscape vacua in string theory is vast, the number of supermoduli vacua which lead to distinct low-energy physics is even larger, perhaps infinitely so. From the anthropic perspective it is therefore important to understand whether complex life is possible on moduli ...<br/>[Phys. Rev. D 80, 086012] Published Wed Oct 28, 2009 Stephen D. H. Hsu 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086012 Phys. Rev. D 80, 086012 text/html article Physical Review D 80 8 2009-10-28T00:00:00-04:00 086012 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086011 Author(s): Arjun Bagchi and Ipsita Mandal<br/>The Galilean conformal algebra has recently been realized in the study of the nonrelativistic limit of the AdS/CFT conjecture. This was obtained by a systematic parametric group contraction of the parent relativistic conformal field theory. In this paper, we extend the analysis to include supersymme...<br/>[Phys. Rev. D 80, 086011] Published Wed Oct 28, 2009 Arjun Bagchi and Ipsita Mandal 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086011 Phys. Rev. D 80, 086011 text/html article Physical Review D 80 8 2009-10-28T00:00:00-04:00 086011 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086010 Author(s): Charles B. Thorn<br/>We extend the lightcone worldsheet lattice approach to string theory, proposed in 1977 by Giles and me, to allow for coincident D-branes. We find a convenient lattice representation of Dirichlet boundary conditions, which the open string coordinates transverse to the D-branes satisfy. We then repres...<br/>[Phys. Rev. D 80, 086010] Published Wed Oct 28, 2009 Charles B. Thorn 2009-10-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086010 Phys. Rev. D 80, 086010 text/html article Physical Review D 80 8 2009-10-28T00:00:00-04:00 086010 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086009 Author(s): Ari Pakman, Leonardo Rastelli, and Shlomo S. Razamat<br/>We study correlation functions of single-cycle chiral operators in Sym^{N} T^{4} , the symmetric product orbifold of N supersymmetric four-tori. Correlators of twist operators are evaluated on covering surfaces, generally of different genera, where fields are single valued. We compute some simple fo...<br/>[Phys. Rev. D 80, 086009] Published Fri Oct 23, 2009 Ari Pakman, Leonardo Rastelli, and Shlomo S. Razamat 2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086009 Phys. Rev. D 80, 086009 text/html article Physical Review D 80 8 2009-10-23T00:00:00-04:00 086009 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086008 Author(s): Paolo Pasti , Igor Samsonov , Dmitri Sorokin , and Mario Tonin <br/>We reveal nonmanifest gauge and SO(1,5) Lorentz symmetries in the Lagrangian description of a six-dimensional free chiral field derived from the Bagger-Lambert-Gustavsson model in [P.-M. Ho and Y. Matsuo, J. High Energy Phys. 06 (2008) 105.] and make this formulation covariant with the use of a trip...<br/>[Phys. Rev. D 80, 086008] Published Fri Oct 23, 2009 Paolo Pasti , Igor Samsonov , Dmitri Sorokin , and Mario Tonin  2009-10-23T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086008 Phys. Rev. D 80, 086008 text/html article Physical Review D 80 8 2009-10-23T00:00:00-04:00 086008 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086007 Author(s): Ben Craps, Thomas Hertog, and Neil Turok<br/>Motivated by the study of big crunch singularities in asymptotically AdS_{4} space-times, we consider a marginal triple trace deformation of Aharony-Bergman-Jafferis-Maldacena (ABJM) theory. The deformation corresponds to adding a potential which is unbounded below. In a ’t Hooft large N limit, t...<br/>[Phys. Rev. D 80, 086007] Published Fri Oct 16, 2009 Ben Craps, Thomas Hertog, and Neil Turok 2009-10-16T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086007 Phys. Rev. D 80, 086007 text/html article Physical Review D 80 8 2009-10-16T00:00:00-04:00 086007 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086006 Author(s): Piotr Sułkowski<br/>We show how to represent a class of expressions involving discrete sums over partitions as matrix models. We apply this technique to the partition functions of 2^{*} theories, i.e. Seiberg-Witten theories with the massive hypermultiplet in the adjoint representation. We consider theories in four, fi...<br/>[Phys. Rev. D 80, 086006] Published Fri Oct 16, 2009 Piotr Sułkowski 2009-10-16T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086006 Phys. Rev. D 80, 086006 text/html article Physical Review D 80 8 2009-10-16T00:00:00-04:00 086006 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086005 Author(s): Krzysztof A. Meissner and Hermann Nicolai<br/>We discuss the conditions under which classically conformally invariant models in four dimensions can arise out of nonconformal (Einstein) gravity. As an “existence proof” that this is indeed possible we show how to derive N=4 super Yang-Mills theory with any compact gauge group G from nonconfor...<br/>[Phys. Rev. D 80, 086005] Published Thu Oct 15, 2009 Krzysztof A. Meissner and Hermann Nicolai 2009-10-15T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086005 Phys. Rev. D 80, 086005 text/html article Physical Review D 80 8 2009-10-15T00:00:00-04:00 086005 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086004 Author(s): Goro Ishiki, Shinji Shimasaki, and Asato Tsuchiya<br/>We study a matrix model which is obtained by dimensional reduction of Chern-Simons theory on S^{3} to zero dimension. We find that, expanded around a particular background consisting of multiple fuzzy spheres, it reproduces the original theory on S^{3} in the planar limit. This is viewed as a new ty...<br/>[Phys. Rev. D 80, 086004] Published Tue Oct 13, 2009 Goro Ishiki, Shinji Shimasaki, and Asato Tsuchiya 2009-10-13T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086004 Phys. Rev. D 80, 086004 text/html article Physical Review D 80 8 2009-10-13T00:00:00-04:00 086004 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086003 Author(s): Gang Chen, Yeuk-Kwan E. Cheung, Zheyong Fan, Jens Fjelstad, and Stephen Hwang<br/>We prove a no-ghost theorem for a bosonic string propagating in Nappi-Witten spacetime. This is achieved in two steps. We first demonstrate unitarity for a class of NW/U(1) modules: the norm of any state which is primary with respect to a chosen timelike U(1) is non-negative. We then show that physi...<br/>[Phys. Rev. D 80, 086003] Published Mon Oct 12, 2009 Gang Chen, Yeuk-Kwan E. Cheung, Zheyong Fan, Jens Fjelstad, and Stephen Hwang 2009-10-12T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086003 Phys. Rev. D 80, 086003 text/html article Physical Review D 80 8 2009-10-12T00:00:00-04:00 086003 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.087901 Author(s): Mahdi Torabian and Ho-Ung Yee<br/>Based on the expectation that the constituent quark model may capture the right physics in the large N limit, we point out that the orbital angular momentum of the quark-antiquark pair inside light mesons of low spins in the constituent quark model may provide a clue for the holographic dual string ...<br/>[Phys. Rev. D 80, 087901] Published Fri Oct 09, 2009 Mahdi Torabian and Ho-Ung Yee 2009-10-09T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.087901 Phys. Rev. D 80, 087901 text/html article Physical Review D 80 8 2009-10-09T00:00:00-04:00 087901 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086002 Author(s): M. Kruczenski and A. Tirziu<br/>In this paper we study the function χ(x_{1} ,x_{2} ,g) that determines the dressing phase that appears in the all-loop Bethe ansatz equations for the SL(2) sector of N=4 super Yang-Mills theory. First, we consider the coefficients c_{r,s} (g) of the expansion of χ(x_{1} ,x_{2} ,g) in inverse power...<br/>[Phys. Rev. D 80, 086002] Published Wed Oct 07, 2009 M. Kruczenski and A. Tirziu 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086002 Phys. Rev. D 80, 086002 text/html article Physical Review D 80 8 2009-10-07T00:00:00-04:00 086002 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.086001 Author(s): Mitsutoshi Fujita<br/>We consider the small deformation of the pointlike Wilson loop in the 3-dimensional N=6 superconformal Chern-Simons theory. By Taylor expansion of the pointlike Wilson loop in powers of the loop variables, we obtain the BPS operators that correspond to the excited string states of the dual IIA strin...<br/>[Phys. Rev. D 80, 086001] Published Fri Oct 02, 2009 Mitsutoshi Fujita 2009-10-02T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.086001 Phys. Rev. D 80, 086001 text/html article Physical Review D 80 8 2009-10-02T00:00:00-04:00 086001 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066010 Author(s): Thomas Creutzig, Peter B. Rønne, and Volker Schomerus<br/>We extend the Kazama-Suzuki construction of models with N=(2,2) world-sheet supersymmetry to cosets S/K of supergroups. Among the admissible target spaces that allow for an extension to N=2 superconformal algebras are some simple Lie supergroups, including PSL(N|N). Our general analysis is illustrat...<br/>[Phys. Rev. D 80, 066010] Published Tue Sep 29, 2009 Thomas Creutzig, Peter B. Rønne, and Volker Schomerus 2009-09-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066010 Phys. Rev. D 80, 066010 text/html article Physical Review D 80 6 2009-09-29T00:00:00-04:00 066010 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066009 Author(s): Harvendra Singh<br/>This work is based on an earlier proposal [H. Singh, Phys. Lett. B 673, 68 (2009)] that the membrane BF theory consists of matter fields along with Chern-Simons fields as well as the auxiliary pairs of scalar and tensor fields. In particular, we discuss the supersymmetry aspects of such a membrane t...<br/>[Phys. Rev. D 80, 066009] Published Mon Sep 21, 2009 Harvendra Singh 2009-09-21T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066009 Phys. Rev. D 80, 066009 text/html article Physical Review D 80 6 2009-09-21T00:00:00-04:00 066009 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066008 Author(s): Zhao-Long Wang and H. Lü<br/>We obtain the most general spherically symmetric M2-branes and type-IIB strings, with R^{1,2} ×SO(8) and R^{1,1} ×SO(8) isometries, respectively. We find that there are 12 different classes of M2-branes, and we study their curvature properties. In particular, we obtain new smooth M2-brane wormhol...<br/>[Phys. Rev. D 80, 066008] Published Fri Sep 18, 2009 Zhao-Long Wang and H. Lü 2009-09-18T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066008 Phys. Rev. D 80, 066008 text/html article Physical Review D 80 6 2009-09-18T00:00:00-04:00 066008 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066007 Author(s): Gilad Lifschytz and Matthew Lippert<br/>We study four-dimensional interacting fermions in a strong magnetic field, using the holographic Sakai-Sugimoto model of intersecting D4- and D8-branes in the deconfined, chiral-symmetric parallel phase. We find that as the magnetic field is varied, while staying in the parallel phase, the fermions ...<br/>[Phys. Rev. D 80, 066007] Published Thu Sep 10, 2009 Gilad Lifschytz and Matthew Lippert 2009-09-10T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066007 Phys. Rev. D 80, 066007 text/html article Physical Review D 80 6 2009-09-10T00:00:00-04:00 066007 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066006 Author(s): Aleksey Cherman and Abhinav Nellore<br/>We show that there are universal high-temperature relations for transport coefficients of plasmas described by a wide class of field theories with gravity duals. These theories can be viewed as strongly coupled large-N_{c} conformal field theories deformed by one or more relevant operators. The tran...<br/>[Phys. Rev. D 80, 066006] Published Thu Sep 10, 2009 Aleksey Cherman and Abhinav Nellore 2009-09-10T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066006 Phys. Rev. D 80, 066006 text/html article Physical Review D 80 6 2009-09-10T00:00:00-04:00 066006 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066005 Author(s): Gilad Lifschytz and Matthew Lippert<br/>We compute the longitudinal and Hall conductivities in the parallel phase of the Sakai-Sugimoto model with a transverse magnetic field. We find that the conductivities behave as if the charge of the system is made out of two different types; one behaves as charge carriers flowing through a dissipati...<br/>[Phys. Rev. D 80, 066005] Published Wed Sep 09, 2009 Gilad Lifschytz and Matthew Lippert 2009-09-09T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066005 Phys. Rev. D 80, 066005 text/html article Physical Review D 80 6 2009-09-09T00:00:00-04:00 066005 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066004 Author(s): Hironobu Kihara, Muneto Nitta, Misao Sasaki, Chul-Moon Yoo, and Ignacio Zaballa<br/>We study cosmology of the Einstein-Yang-Mills theory in ten dimensions with a quartic term in the Yang-Mills field strength. We obtain analytically a class of cosmological solutions in which the extra dimensions are static and the scale factor of the four-dimensional Friedmann-Lemaitre-Robertson-Wal...<br/>[Phys. Rev. D 80, 066004] Published Tue Sep 08, 2009 Hironobu Kihara, Muneto Nitta, Misao Sasaki, Chul-Moon Yoo, and Ignacio Zaballa 2009-09-08T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066004 Phys. Rev. D 80, 066004 text/html article Physical Review D 80 6 2009-09-08T00:00:00-04:00 066004 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066003 Author(s): Aleksey Cherman, Thomas D. Cohen, and Abhinav Nellore<br/>We show that the squared speed of sound v_{s}^{2} is bounded from above at high temperatures by the conformal value of 1/3 in a class of strongly coupled four-dimensional field theories, given some mild technical assumptions. This class consists of field theories that have gravity duals sourced by a...<br/>[Phys. Rev. D 80, 066003] Published Thu Sep 03, 2009 Aleksey Cherman, Thomas D. Cohen, and Abhinav Nellore 2009-09-03T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066003 Phys. Rev. D 80, 066003 text/html article Physical Review D 80 6 2009-09-03T00:00:00-04:00 066003 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066002 Author(s): Paul M. Hohler and Mikhail A. Stephanov<br/>We show that in a general class of strongly interacting theories at high temperatures the speed of sound approaches the conformal value c_{s}^{2} =1/3 universally from below. This class includes theories holographically dual to a theory of gravity coupled to a single scalar field, representing the o...<br/>[Phys. Rev. D 80, 066002] Published Thu Sep 03, 2009 Paul M. Hohler and Mikhail A. Stephanov 2009-09-03T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066002 Phys. Rev. D 80, 066002 text/html article Physical Review D 80 6 2009-09-03T00:00:00-04:00 066002 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.066001 Author(s): Huabi Zeng, Zheyong Fan, and Zhongzhou Ren<br/>It is known that a classical SU(2) Einstein-Yang-Mills theory in 3+1 dimensional anti–de Sitter spacetime can provide a holographic dual to a 2+1 dimensional time reversal symmetry breaking superconductor with a pseudogap. We study the properties of this holographic superconductor in the presence...<br/>[Phys. Rev. D 80, 066001] Published Tue Sep 01, 2009 Huabi Zeng, Zheyong Fan, and Zhongzhou Ren 2009-09-01T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.066001 Phys. Rev. D 80, 066001 text/html article Physical Review D 80 6 2009-09-01T00:00:00-04:00 066001 D15 D15 http://link.aps.org/doi/10.1103/PhysRevD.80.046008 Author(s): Michael Gary and Steven B. Giddings<br/>We investigate recovery of the bulk S matrix from the AdS/CFT correspondence, at large radius. It was recently argued that some of the elements of the S matrix might be read from CFT correlators, given a particular singularity structure of the latter, but leaving the question of more general S matri...<br/>[Phys. Rev. D 80, 046008] Published Mon Aug 31, 2009 Michael Gary and Steven B. Giddings 2009-08-31T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevD.80.046008 Phys. Rev. D 80, 046008 text/html article Physical Review D 80 4 2009-08-31T00:00:00-04:00 046008 D15 D15