13 research outputs found
Wilson loops correlators in defect SYM
We consider the correlator of two concentric circular Wilson loops with equal
radii for arbitrary spatial and internal separation at strong coupling within a
defect version of SYM. Compared to the standard Gross-Ooguri
phase transition between connected and disconnected minimal surfaces, a more
complicated pattern of saddle-points contributes to the two-circles correlator
due to the defect's presence. We analyze the transitions between different
kinds of minimal surfaces and their dependence on the setting's numerous
parameters.Comment: 33 pages, 18 figures, published versio
Wilson lines in AdS/dCFT
We consider the expectation value of Wilson lines in two defect versions of N
= 4 SYM, both with supersymmetry completely broken, where one is described in
terms of an integrable boundary state, the other one not. For both cases,
imposing a certain double scaling limit, we find agreement to two leading
orders between the expectation values calculated from respectively the field
theory and the string theory side of the AdS/dCFT correspondence.Comment: 8 pages, 2 figures; typos correcte
Monitorización del consumo de sustancias de abuso legales e ilegales en España a través de las aguas residuales en el marco de la red ESAR-Net
Trabajo presentado en el 4th Congreso Internacional y XLIX Jornadas Nacionales de Socidrogalcohol - VIII Congreso Nacional PatologĂa Bio-Psicosocial, celebrado en Tenerife del 06 al 08 de octubre de 2022
Volume complexity for the nonsupersymmetric Janus AdS<sub>5</sub> geometry
We compute holographic complexity for the non-supersymmetric Janus
deformation of AdS according to the volume conjecture. The result is
characterized by a power-law ultraviolet divergence. When a ball-shaped region
located around the interface is considered, a sub-leading logarithmic divergent
term and a finite part appear in the corresponding subregion volume complexity.
Using two different prescriptions to regularize the divergences, we find that
the coefficient of the logarithmic term is universal.Comment: 22 pages, 5 figure
Circular Wilson loops in defect N = 4 SYM: phase transitions, double-scaling limits and OPE expansions
We consider circular Wilson loops in a defect version of N = 4 super-Yang- Mills theory which is dual to the D3-D5 brane system with k units of flux. When the loops are parallel to the defect, we can construct both BPS and non-BPS operators, depending on the orientation of the scalar couplings in the R-symmetry directions. At strong 't Hooft coupling we observe, in the non supersymmetric case, a Gross-Ooguri-like phase transition in the dual gravitational theory: the familiar disk solution dominates, as expected, when the operator is far from the defect while a cylindrical string worldsheet, connecting the boundary loop with the probe D5-brane, is favourite below a certain distance (or equivalently for large radii of the circles). In the BPS case, instead, the cylindrical solution does not exist for any choice of the physical parameters, suggesting that the exchange of light supergravity modes always saturate the expectation value at strong coupling. We study the double-scaling limit for large k and large 't Hooft coupling, finding full consistency in the non-BPS case between the string solution and the one-loop perturbative result. Finally we discuss, in the BPS case, the failure of the double-scaling limit and the OPE expansion of the Wilson loop, finding consistency with the known results for the one-point functions of scalar composite operators
Action complexity in the presence of defects and boundaries
The holographic complexity of formation for the AdS(3) 2-sided Randall-Sundrum model and the AdS(3)/BCFT2 models is logarithmically divergent according to the volume conjecture, while it is finite using the action proposal. One might be tempted to conclude that the UV divergences of the volume and action conjectures are always different for defects and boundaries in two-dimensional conformal field theories. We show that this is not the case. In fact, in Janus AdS(3) we find that both volume and action proposals provide the same kind of logarithmic divergences
Volume complexity for Janus AdS(3) geometries
We investigate the complexity-volume proposal in the case of Janus AdS (3) geometries, both at zero and finite temperature. The leading contribution coming from the Janus interface is a logarithmic divergence, whose coefficient is a function of the dilaton excursion. In the presence of the defect, complexity is no longer topological and becomes temperature-dependent. We also study the time evolution of the extremal volume for the time-dependent Janus BTZ black hole. This background is not dual to an interface but to a pair of entangled CFTs with different values of the couplings. At late times, when the equilibrium is restored, the couplings of the CFTs do not influence the complexity rate. On the contrary, the complexity rate for the out-of-equilibrium system is always smaller compared to the pure BTZ black hole background