6 papers
Is the Chiral Magnetic Effect fast enough?
Jewel K. Ghosh, Sebastian Grieninger, Karl Landsteiner +1
It depends: While we find within holography that the lifetime of the magnetic field for collider energies like the ones achieved at RHIC is long enough to build up the chiral magne…
Revisiting Coleman-de Luccia transitions in the AdS regime using holography
Jewel K. Ghosh, Elias Kiritsis, Francesco Nitti +1
Coleman-de Luccia processes for AdS to AdS decays in Einstein-scalar theories are studied. Such tunnelling processes are interpreted as vev-driven holographic RG flows of a quantum…
Effective field theory of stochastic diffusion from gravity
Jewel K. Ghosh, R. Loganayagam, Siddharth G. Prabhu +3
Planar black holes in AdS have long-lived quasinormal modes which capture the physics of charge and momentum diffusion in the dual field theory. How should we characterize the effe…
Back-reaction in massless de Sitter QFTs: holography, gravitational DBI action and f(R) gravity
Jewel Kumar Ghosh, Elias Kiritsis, Francesco Nitti +1
We employ gauge-gravity duality to study the backreaction effect of 4-dimensional large- quantum field theories on constant-curvature backgrounds, and in particular de Sitter sp…
Holographic RG flows on curved manifolds and the -theorem
Jewel Kumar Ghosh, Elias Kiritsis, Francesco Nitti +1
We study -functions in the context of field theories on using gauge-gravity duality, with the radius of playing the role of RG scale. We show that the on-shell actio…
De Sitter and Anti-de Sitter branes in self-tuning models
Jewel Kumar Ghosh, Elias Kiritsis, Francesco Nitti +1
Maximally symmetric curved-brane solutions are studied in dilatonic braneworld models which realise the self-tuning of the effective four-dimensional cosmological constant. It is f…