Outputs (5)

Topological sigma models & dissipative hydrodynamics (2016)
Journal Article
Haehl, F. M., Loganayagam, R., & Rangamani, M. (2016). Topological sigma models & dissipative hydrodynamics. Journal of High Energy Physics, 2016(4), Article 39. https://doi.org/10.1007/jhep04%282016%29039

We outline a universal Schwinger-Keldysh effective theory which describes macroscopic thermal fluctuations of a relativistic field theory. The basic ingredients of our construction are three: a doubling of degrees of freedom, an emergent abelian symmetr... Read More about Topological sigma models & dissipative hydrodynamics.

The fluid manifesto: emergent symmetries, hydrodynamics, and black holes (2016)
Journal Article
Haehl, F. M., Loganayagam, R., & Rangamani, M. (2016). The fluid manifesto: emergent symmetries, hydrodynamics, and black holes. Journal of High Energy Physics, 2016(1), Article 184. https://doi.org/10.1007/jhep01%282016%29184

We focus on the question of how relativistic fluid dynamics should be thought of as a Wilsonian effective field theory emerging from Schwinger-Keldysh path integrals. Taking the basic principles of Schwinger-Keldysh formalism seriously, we are led to... Read More about The fluid manifesto: emergent symmetries, hydrodynamics, and black holes.

Comments on universal properties of entanglement entropy and bulk reconstruction (2015)
Journal Article
Haehl, F. M. (2015). Comments on universal properties of entanglement entropy and bulk reconstruction. Journal of High Energy Physics, 2015(10), Article 159. https://doi.org/10.1007/jhep10%282015%29159

Entanglement entropy of holographic CFTs is expected to play a crucial role in the reconstruction of semiclassical bulk gravity. We consider the entanglement entropy of spherical regions of vacuum, which is known to contain universal contributions. A... Read More about Comments on universal properties of entanglement entropy and bulk reconstruction.

Topological aspects of generalized gravitational entropy (2015)
Journal Article
Haehl, F. M., Hartman, T., Marolf, D., Maxfield, H., & Rangamani, M. (2015). Topological aspects of generalized gravitational entropy. Journal of High Energy Physics, 2015(5), Article 23. https://doi.org/10.1007/jhep05%282015%29023

The holographic prescription for computing entanglement entropy requires that the bulk extremal surface, whose area encodes the amount of entanglement, satisfies a homology constraint. Usually this is stated as the requirement of a (spacelike) interp... Read More about Topological aspects of generalized gravitational entropy.

Permutation orbifolds and holography (2015)
Journal Article
Haehl, F., & Rangamani, M. (2015). Permutation orbifolds and holography. Journal of High Energy Physics, 2015(3), Article 163. https://doi.org/10.1007/jhep03%282015%29163

Two dimensional conformal field theories with large central charge and a sparse low-lying spectrum are expected to admit a classical string holographic dual. We construct a large class of such theories employing permutation orbifold technology. In pa... Read More about Permutation orbifolds and holography.