Bulletin of the American Physical Society
APS April Meeting 2013
Volume 58, Number 4
Saturday–Tuesday, April 13–16, 2013; Denver, Colorado
Session B12: AdS/CFT Holography |
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Sponsoring Units: DPF Chair: Bob Bernstein, Fermi National Accelerator Laboratory Room: Plaza Court 1 |
Saturday, April 13, 2013 10:45AM - 10:57AM |
B12.00001: Analytic fermionic Green's functions from holography Jie Ren, Steven Gubser We find an analytically solvable model that captures essential features of the holographic Fermi surfaces. Both the Fermi momentum and the Green's function near the Fermi surface are analytically obtained. The geometry descends from type IIB supergravity, where it describes D3-branes with equal angular momenta in two of the three independent planes of rotation orthogonal to the world-volume. The IR geometry of this extremal two-charge black hole is conformal to AdS$_2 \times R^3$. There can be several Fermi momenta, and they take the form $k_F=q-n-1/2$ (in units of the chemical potential), where $q$ is the charge of the spinor, and $n$ is a non-negative integer that labels the Fermi surfaces. [Preview Abstract] |
Saturday, April 13, 2013 10:57AM - 11:09AM |
B12.00002: Geons and Spin-2 Condensates in the AdS Soliton Gavin Hartnett, Gary Horowitz We construct geons starting with gravitational perturbations of the AdS soliton. Previous studies of a charged scalar field in the soliton background showed a holographic insulator/superconductor transition at a critical chemical potential. We explore the possibility that dimensional reduction of the geon could model a transition to a d-wave superconductor. We find that although one does get a charged spin-2 condensate, it has higher free energy than the state without the condensate, so there is no phase transition. [Preview Abstract] |
Saturday, April 13, 2013 11:09AM - 11:21AM |
B12.00003: Light-front holography and the light-front coupled-cluster method John Hiller We explore a combination of light-front holographic QCD and the nonperturbative light-front coupled-cluster (LFCC) method in the context of a quark model for mesons. The LFCC method converts the meson eigenstate problem of QCD into an effective eigenproblem in the valence quark-antiquark Fock sector. Light-front holography then provides an analytically solvable model for the valence sector, which can be used as a starting point for the solution of the LFCC eigenproblem. Within this context, we extend the holographic eigenproblem for mesons to include massive quarks and a calculable longitudinal wave function. Results are compared with those obtained with the Brodsky-deTeramond ansatz. [Preview Abstract] |
Saturday, April 13, 2013 11:21AM - 11:33AM |
B12.00004: A Potential for Soft-Wall AdS/QCD Sean Bartz, Joseph Kapusta The Anti-de Sitter Space/Conformal Field Theory (AdS/CFT) correspondence may offer new and useful insights into the non-perturbative regime of strongly coupled gauge theories such as Quantum Chromodynamics. Soft-wall AdS/QCD models reproduce the linear Regge trajectories of meson spectra by including background dilaton and chiral condensate fields. Efforts to derive these background fields from a gravitational potential have so far failed to correctly incorporate chiral symmetry breaking. We present a three-field scalar potential that includes the dilaton field and the chiral and glueball condensates. This potential is shown to satisfy both the UV boundary conditions on the background fields set by the AdS/CFT correspondence and the correct behavior in the IR limit to obtain spontaneous chiral symmetry breaking. We present the mass spectra produced by this model for the radially excited states of spin-0 and spin-1 mesons. [Preview Abstract] |
Saturday, April 13, 2013 11:33AM - 11:45AM |
B12.00005: NS5 Branes on the Resolved Cone over $Y^{p,q}$ Catherine Whiting, Vincent Rodgers, Elena Caceres, Leopoldo Pando Zayas The AdS/CFT correspondence provides a powerful tool to attack strong coupling dynamics using gravitational duals. The Klebanov-Stassler prototype has a large family of duals that contain $\mathcal{N}$=1 SYM. A new and distinct family of supergravity solutions containing a sector dual to $\mathcal{N}$=1 confining gauge theories might be related to the resolved cone over $Y^{p,q}$. We present a generalized solution for NS5 branes wrapped on 2-cycles on the resolved cone over $Y^{p,q}$. [Preview Abstract] |
Saturday, April 13, 2013 11:45AM - 11:57AM |
B12.00006: De Sitter Entropy from a Lower Dimensional Black Hole Nelson Zamorano, Cesar Arias, Rodrigo Aros An alternative way to obtain the entropy of de Sitter spacetime for dimensions higher or equal than five is presented. We show that de Sitter entropy can be obtained as that of a lower dimensional black hole. This result follows from the existence of a one to one correspondence between de Sitter and a spacetime which contains a black hole localized on a $p$-brane. Specifically, the entropy of five dimensional de Sitter can be obtained as the entropy of a BTZ black hole localized on a 2-brane. Therefore, the microstates giving rise to such entropy, are those carried by a two dimensional conformal field theory. For dimensions higher than five, de Sitter entropy is matched to the entropy of a Schwarzschild-de Sitter black hole localized on a ($d-$3)-brane. [Preview Abstract] |
Saturday, April 13, 2013 11:57AM - 12:09PM |
B12.00007: AdS Gravity Coupled to Massive Scalar Fields Hans Bantilan I will discuss ongoing work in simulating asymptotically anti-de Sitter spacetimes with massive scalar field matter content. One motivation of this study lies squarely within the realm of pure gravity, in the possibility of constructing novel black hole solutions via the collapse of scalars with specifically chosen potentials. An even more tantalizing reason for studying these gravitating systems lies in a potential application to condensed matter physics, in modeling quenched quantum systems. [Preview Abstract] |
Saturday, April 13, 2013 12:09PM - 12:21PM |
B12.00008: AdS flowing black funnels: Stationary AdS black holes with non-Killing horizons and heat transport in the dual CFT Sebastian Fischetti, Donald Marolf, Jorge Santos We construct stationary non-equilibrium black funnels locally asymptotic to global AdS${}_4$ in vacuum Einstein-Hilbert gravity with negative cosmological constant. These are non-compactly-generated black holes in which a single connected bulk horizon extends to meet the conformal boundary. Thus the induced (conformal) boundary metric has smooth horizons as well. In our examples, the boundary spacetime contains a pair of black holes connected through the bulk by a tubular bulk horizon. Taking one boundary black hole to be hotter than the other ($\Delta T \neq 0$) prohibits equilibrium. The result is a so-called flowing funnel, a stationary bulk black hole with a non-Killing horizon that may be said to transport heat toward the cooler boundary black hole. While most of our results are numerical, a semi-analytic fluid/gravity description can be obtained by passing to a one-parameter generalization of the above boundary conditions. In the fluid regime, we find excellent agreement with our numerical solutions. In terms of a dual CFT, our solutions describe heat transport via a large $N$ version of Hawking radiation through a deconfined plasma that couples efficiently to both boundary black holes. [Preview Abstract] |
Saturday, April 13, 2013 12:21PM - 12:33PM |
B12.00009: Holographic k-string Tensions in Higher Representations Bradly Button, Seo Jun Lee, Leopoldo Pando Zayas, Vincent Rodgers, Kory Stiffler We investigate holographic k-string representations in 3+1 and 2+1 dimensions of field theories dual to confining geometries of the Maldacena-Nu\~nez and Maldacena-Nastase supergravity backgrounds via D5 branes with world volume fluxes. The D5 brane tensions are computed in qualitative agreement with totally symmetric and totally anti-symmetric representations with results from lattice QCD and the Hamiltonian method used by Karabali and Nair. [Preview Abstract] |
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