Gibbons, G.W. Pope, C.N. Solodukhin, Sergey

We study a free scalar field $\phi$ in a fixed curved background spacetime subject to a higher derivative field equation of the form $F(\Box)\phi =0$, where $F$ is a polynomial of the form $F(\Box)= \prod_i (\Box-m_i^2)$ and all masses $m_i$ are distinct and real. Using an auxiliary field method to simplify the calculations, we obtain expressions f...

Le Floch, Bruno Mezei, Márk

Two-dimensional CFTs and integrable models have an infinite set of conserved KdV higher spin currents. These currents can be argued to remain conserved under the $T\bar{T}$ deformation and its generalizations. We determine the flow equations the KdV charges obey under the $T\bar{T}$ deformation: they behave as probes "riding the Burgers flow" of th...

Guica, Monica Monten, Ruben

We use the variational principle approach to derive the large $N$ holographic dictionary for two-dimensional $T\bar T$-deformed CFTs, for both signs of the deformation parameter. The resulting dual gravitational theory has mixed boundary conditions for the non-dynamical graviton; the boundary conditions for matter fields are undeformed. When the ma...

Le Floch, Bruno Mezei, Márk

Two-dimensional CFTs and integrable models have an infinite set of conserved KdV higher spin currents. These currents can be argued to remain conserved under the $T\bar{T}$ deformation and its generalizations. We determine the flow equations the KdV charges obey under the $T\bar{T}$ deformation: they behave as probes "riding the Burgers flow" of th...

Guica, Monica Monten, Ruben

We use the variational principle approach to derive the large $N$ holographic dictionary for two-dimensional $T\bar T$-deformed CFTs, for both signs of the deformation parameter. The resulting dual gravitational theory has mixed boundary conditions for the non-dynamical graviton; the boundary conditions for matter fields are undeformed. When the ma...

Ciambelli, Luca Leigh, Robert G.

It is a well known property of holographic theories that diffeomorphism invariance in the bulk space-time implies Weyl invariance of the dual holographic field theory in the sense that the field theory couples to a conformal class of background metrics. The usual Fefferman-Graham formalism, which provides us with a holographic dictionary between th...

Ciambelli, Luca Leigh, Robert G.

It is a well known property of holographic theories that diffeomorphism invariance in the bulk space-time implies Weyl invariance of the dual holographic field theory in the sense that the field theory couples to a conformal class of background metrics. The usual Fefferman-Graham formalism, which provides us with a holographic dictionary between th...

Helayël-Neto, José A. Spallicci, Alessandro D.A. M.

In the presence of Lorentz Symmetry Violations (LSVs) associated to Standard Model Extensions (SMEs), we have recently shown the non-conservation of the energy-momentum tensor of a light-wave crossing an electro-magnetic background field even when constant. Herein, we infer that in a particle description, the energy variation for a photon implies v...

Helayël-Neto, José A. Spallicci, Alessandro D.A. M.

In the presence of Lorentz Symmetry Violations (LSVs) associated to Standard Model Extensions (SMEs), we have recently shown the non-conservation of the energy-momentum tensor of a light-wave crossing an electro-magnetic background field even when constant. Herein, we infer that in a particle description, the energy variation for a photon implies v...

Donnay, Laura Marteau, Charles

We show that the geometry of a black hole horizon can be described as a Carrollian geometry emerging from an ultra-relativistic limit where the near-horizon radial coordinate plays the role of a virtual velocity of light tending to zero. We prove that the laws governing the dynamics of a black hole horizon, the null Raychaudhuri and Damour equation...