A Tail of a Quark in N=4 SYM (2009)
Chernicoff, Mariano, Garcia, J. Antonio, Guijosa, Alberto
We study the dynamics of a `composite' or `dressed' quark in strongly-coupled large-N_c N=4 super-Yang-Mills, making use of the AdS/CFT correspondence. We show that the standard string dynamics...
Generalized Lorentz-Dirac Equation for a Strongly-Coupled Gauge Theory (2009)
Chernicoff, Mariano, Garcia, J. Antonio, Guijosa, Alberto
We derive a semiclassical equation of motion for a `composite' quark in strongly-coupled large-N_c N=4 super-Yang-Mills, making use of the AdS/CFT correspondence. The resulting non-linear equation...
Acceleration and Energy Loss in N=4 SYM (2009)
Chernicoff, Mariano, Guijosa, Alberto
We give a brief overview of the results obtained in arXiv:0803.3070, concerning the rate of energy loss of an accelerating quark in strongly-coupled N=4 super-Yang-Mills, both at zero and finite...
Acceleration, Energy Loss and Screening in Strongly-Coupled Gauge Theories (2008)
Chernicoff, Mariano, Guijosa, Alberto
We explore various aspects of the motion of heavy quarks in strongly-coupled gauge theories, employing the AdS/CFT correspondence. Building on earlier work by Mikhailov, we study the dispersion...
Energy Loss of Gluons, Baryons and k-Quarks in an N=4 SYM Plasma (2006)
Chernicoff, Mariano, Guijosa, Alberto
We consider different types of external color sources that move through a strongly-coupled thermal N=4 super-Yang-Mills plasma, and calculate, via the AdS/CFT correspondence, the dissipative force...
The Energy of a Moving Quark-Antiquark Pair in an N=4 SYM Plasma (2006)
Chernicoff, Mariano, Garcia, J. Antonio, Guijosa, Alberto
We make use of the AdS/CFT correspondence to determine the energy of an external quark-antiquark pair that moves through strongly-coupled thermal N=4 super-Yang-Mills plasma, both in the rest frame...
On Drag Forces and Jet Quenching in Strongly Coupled Plasmas (2006)
Caceres, Elena, Guijosa, Alberto
We compute the drag force experienced by a heavy quark that moves through plasma in a gauge theory whose dual description involves arbitrary metric and dilaton fields. As a concrete application, we...
Drag Force in a Charged N=4 SYM Plasma (2006)
Caceres, Elena, Guijosa, Alberto
Following recent developments, we employ the AdS/CFT correspondence to determine the drag force exerted on an external quark that moves through an N=4 super-Yang-Mills plasma with a non-zero R-charge...
Guijosa, Alberto, Lowe, David A., Murugan, Jeff
We consider dS_2/CFT_1 where the asymptotic symmetry group of the de Sitter spacetime contains the Virasoro algebra. We construct representations of the Virasoro algebra realized in the Fock space of...
Threebrane Absorption and Emission from a Brane-Antibrane System (2004)
Garcia, J. Antonio, Guijosa, Alberto
We show that a previously proposed model based on a D3-brane--anti-D3-brane system at finite temperature can reproduce the low-frequency absorption and emission probabilities of the black threebrane...
The Entropy of the Rotating Charged Black Threebrane from a Brane-Antibrane System (2004)
Guijosa, Alberto, Hernandez, Hector H., Morales-Tecotl, Hugo A.
We show that a model based on a D3-brane--anti-D3-brane system at finite temperature, proposed previously as a microscopic description of the non-rotating black threebrane of type IIB supergravity...
Guijosa, Alberto, Lowe, David A.
We stress that the dS/CFT correspondence should be formulated using unitary principal series representations of the de Sitter isometry group/conformal group, rather than highest-weight...
Amador, Xavier, Caceres, Elena, Garcia-Compean, Hugo, Guijosa, Alberto
We examine the extension of the Klebanov-Witten gauge/gravity correspondence away from the low-energy conformal limit, to a duality involving the full, asymptotically Ricci-flat background describing...
Garcia, J. Antonio, Guijosa, Alberto, Vergara, J. David
We examine the extent to which the action for the membrane of M-theory (the eleven-dimensional construct which underlies and unifies all of the known string theories) simplifies in the so-called Open...
Black Brane Entropy from Brane-Antibrane Systems (2002)
Danielsson, Ulf H., Guijosa, Alberto, Kruczenski, Martin
In the context of string theory, it is possible to explain the microscopic origin of the entropy of certain black holes in terms of D-brane systems. To date, most of the cases studied in detail refer...
A Membrane Action for OM Theory (2002)
Garcia, J. Antonio, Guijosa, Alberto, Vergara, J. David
Through direct examination of the effect of the OM limit on the M2-brane worldvolume action, we derive a membrane action for OM theory, and more generally, for the eleven-dimensional M-theoretic...
Brane-Antibrane Systems at Finite Temperature and the Entropy of Black Branes (2001)
Danielsson, Ulf H., Guijosa, Alberto, Kruczenski, Martin
We consider D-brane/anti-D-brane systems at T>0. Starting at the closed string vacuum, we argue that a finite temperature leads to the reappearance of open string degrees of freedom. We also show...
Newtonian Gravitons and D-brane Collective Coordinates in Wound String Theory (2000)
Danielsson, Ulf H., Guijosa, Alberto, Kruczenski, Martin
Recently it was shown that NCOS theories are part of a ten-dimensional theory known as Non-relativistic Wound string theory. We clarify the sense in which gravity is present in this theory. We show...
IIA/B, Wound and Wrapped (2000)
Danielsson, Ulf H., Guijosa, Alberto, Kruczenski, Martin
We examine the T-duality relation between 1+1 NCOS and the DLCQ limit of type IIA string theory. We show that, as long as there is a compact dimension, one can meaningfully define an `NCOS' limit of...
Danielsson, Ulf H., Guijosa, Alberto, Kruczenski, Martin, Sundborg, Bo
It has recently been conjectured that the AdS_5/SYM_4 correspondence can be generalized away from the conformal limit, to a duality between supergravity on the full asymptotically flat three-brane...
Undulating Strings and Gauge Theory Waves (1999)
Callan, Curtis G., Guijosa, Alberto
We study some dynamical aspects of the correspondence between strings in AdS space and external heavy quarks in N=4 SYM. Specifically, by examining waves propagating on such strings, we make some...
Baryons and Flux Tubes in Confining Gauge Theories from Brane Actions (1999)
Callan, Curtis G., Guijosa, Alberto, Savvidy, Konstantin G., Tafjord, Oyvind
We study baryon configurations in large N non-supersymmetric SU(N) gauge theories, applying the AdS/CFT correspondence. Using the D5-brane worldvolume theory in the near-horizon geometry of...
Baryons and String Creation from the Fivebrane Worldvolume Action (1998)
Callan, Curtis G., Guijosa, Alberto, Savvidy, Konstantin G.
We construct BPS-exact solutions of the worldvolume Born-Infeld plus WZW action of a D5-brane in the background of N D3-branes. The non-trivial background metric and RR five-form field strength play...
Is Physics in the Infinite Momentum Frame Independent of the Compactification Radius? (1998)
With the aim of clarifying the eleven dimensional content of Matrix theory, we examine the dependence of a theory in the infinite momentum frame (IMF) on the (purely spatial) longitudinal...