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19922026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing 2017 · hep-thShow all

14 papers · 2 filters

hep-th2017★ 9 cited

Vacuum energy from noncommutative models

S. Mignemi, A. Samsarov

The vacuum energy is computed for a scalar field in a noncommutative background in several models of noncommutative geometry. One may expect that the noncommutativity introduces a…

hep-th2017★ 4 cited

Relative-locality geometry for the Snyder model

B. Ivetic, S. Mignemi

We investigate the geometry of the energy-momentum space of the Snyder model of noncommmutative geometry and of its generalizations, according to the postulates of relative localit…

hep-th2017★ 8 cited

Symmetries, Holography and Quantum Phase Transition in Two-dimensional Dilaton AdS Gravity

Mariano Cadoni, Matteo Ciulu, Matteo Tuveri

We present a revisitation of the Almheiri-Polchinski dilaton gravity model from a two-dimensional (2D) bulk perspective. We describe a peculiar feature of the model, namely the pat…

hep-th2017★ 17 cited

UV/IR Mixing in Nonassociative Snyder phi^4 Theory

Stjepan Meljanac, Salvatore Mignemi, Josip Trampetic +1

Using a quantization of the nonassociative and noncommutative Snyder phi^4 scalar field theory in a Hermitian realization, we present in this article analytical formulas for the mo…

hep-th2017★ 6 cited

Twist for Snyder space

Daniel Meljanac, Stjepan Meljanac, Salvatore Mignemi +2

We construct the twist operator for the Snyder space. Our starting point is a non-associative star product related to a Hermitian realisation of the noncommutative coordinates orig…

hep-th2017★ 42 cited

Covariant Holographic Entanglement Negativity for Adjacent Subsystems in

Parul Jain, Vinay Malvimat, Sayid Mondal +1

We propose a covariant holographic entanglement negativity constructionfor time-dependent mixed states of adjacent intervals in -dimensional conformal field theories dual to…

hep-th2017★ 43 cited

Holographic Entanglement Negativity for Adjacent Subsystems in

Parul Jain, Vinay Malvimat, Sayid Mondal +1

We establish our recently proposed holographic entanglement negativity conjecture for mixed states of adjacent subsystems in conformal field theories with concrete higher dimension…

hep-th2017★ 49 cited

Holographic entanglement negativity conjecture for adjacent intervals in

Parul Jain, Vinay Malvimat, Sayid Mondal +1

We propose a holographic entanglement negativity conjecture involving the bulk geometry, for mixed states of adjacent intervals in -dimensional dual conformal field theories…

hep-th2017★ 9 cited

-de Sitter and -Poincaré symmetries emerging from Chern-Simons (2+1)D gravity with a cosmological constant

Giacomo Rosati

Defining a new r-matrix compatible with the scalar product at the basis of the Chern-Simons action for a particle coupled to (2+1) Lorentzian gravity with cosmological constant, I…

hep-th2017★ 1 cited

How is the Presence of Horizons and Localized Matter Encoded in the Entanglement Entropy?

Mariano Cadoni, Parul jain

Motivated by the new theoretical paradigm that views spacetime geometry as emerging from the entanglement of a pre-geometric theory, we investigate the issue of the signature of th…

hep-th2017★ 24 cited

Nonassociative Snyder phi4 Quantum Field Theory

Stjepan Meljanac, Salvatore Mignemi, Josip Trampetic +1

In this article we define and quantize a truncated form of the nonassociative and noncommutative Snyder phi^4 field theory using the functional method in momentum space. More preci…

hep-th2017★ 2 cited

Hysteresis in for QFTs dual to spherical black holes

Mariano Cadoni, Edgardo Franzin, Matteo Tuveri

We define and compute the (analogue) shear viscosity to entropy density ratio for the QFTs dual to spherical AdS black holes both in Einstein and Gauss-Bonnet gravity i…

hep-th2017★ 13 cited

Van der Waals-like Behaviour of Charged Black Holes and Hysteresis in the Dual QFTs

Mariano Cadoni, Edgardo Franzin, Matteo Tuveri

Using the rules of the AdS/CFT correspondence, we compute the spherical analogue of the shear viscosity, defined in terms of the retarded Green function for the stress-energy tenso…

hep-th2017★ 27 cited

Quantum field theory in generalised Snyder spaces

S. Meljanac, D. Meljanac, S. Mignemi +1

We discuss the generalisation of the Snyder model that includes all possible deformations of the Heisenberg algebra compatible with Lorentz invariance and investigate its propertie…