In this talk, I will present our recent approach to calculating the entanglement entropy for quantum field theories coupled to de Sitter (dS) gravity along a timelike boundary. Traditional techniques, such as the island formula—originally developed for non-gravitational systems coupled to AdS gravity—encounter significant challenges when extended to a de Sitter gravitational setting, where no...
In my talk I will discuss subtleties of constructing Black Hole solutions in higher and infinite derivative gravity theories. Special attention will be paid to questions why infinite derivatives are important and how to deal with infinite derivative equations. A connection between absence (or presence) of a singularity and a structure of a non-perturbative graviton propagator will be explained...
We develop a general framework for studying the spin alignment ρ00 for flavorless vector mesons by using the gauge/gravity duality. Focusing on the dilepton production through vector meson decay, we derive the relation between production rates at each spin channel and meson’s spectral function in a thermal medium, which can be evaluated by holographic models for a strongly coupled system. As...
In this talk we explain how collective field theory provides a constructive approach to the AdS/CFT correspondence. In particular, we explain how the redundancy present in the collective field theory is directly responsible for the holographic character of the gravitational description.
We investigate an extended model of holographic superconductor by a nonlinear electrodynamic interaction coupled to a complex scalar field. This non-linear interaction term can make a quantum phase transition at zero temperature with finite charge carrier density. By solving full equations of motion, we can construct various shapes of the superconducting phase in the phase diagram. With a...
Since the establishment of holographic superfluid model, extensive reearches have been worked about zero or finite temperature systems in various aspects. However, few studies touched the phenomenon about supresolids and the phase transition of superfluid-supersolid, as more and more experiments are comfirming the existence of supersolid phase in superfuid systems. To fill the gap, we try to...
Traditional numerical methods face unprecedented challenges when solving complex gravitational problems, especially in the computation of black hole metric in AdS/CFT duality. This paper proposes an innovative approach — DeepCosmo, which combines the method of computing curvature tensors using orthonormal rigid tetrad to train neural networks, exploring a new path for efficiently obtaining...
We exploit the holographic duality to study the system of a one-dimensional interface contacting two semi-infinite two-dimensional CFTs. Central to our investigation is the introduction of a dynamical scalar field located on the bulk interface brane which breaks the scaling symmetry of the dual interface field theory, along with its consequential backreaction on the system. We define an...
