Nuclear Theory·nucl-th

Thursday·October 12, 2017

13 papers—11 primary·2 cross-listed

12
Global Anomalies, Discrete Symmetries, and Hydrodynamic Effective Actions
Paolo Glorioso🇺🇸 · Hong Liu🇺🇸 · Srivatsan Rajagopal🇺🇸
We derive effective actions for parity-violating fluids in both $(3 + 1)$ and $(2 + 1)$ dimensions, including those with anomalies. As a corollary we confirm the most general constitutive relations for such systems derived previously using other methods. We discuss in detail connections between parity-odd transport and underlying discrete symmetries. In (3+1) dimensions we elucidate connections between anomalous transport coefficients and global anomalies, and clarify a previous puzzle concerning transports and local gravitational anomalies.
↳ hep-thhep-phnucl-thJHEP(2019)·78 citations
13
Three-body scattering hypervolumes of particles with short-range interactions
Shangguo Zhu · Shina Tan
The low-energy scattering of three bosons or distinguishable particles with short-range interactions is characterized by a fundamental parameter, the three-body scattering hypervolume. Its imaginary part is directly related to the three-body recombination rate in a quantum gas consisting of such particles. We derive an analytical formula of it for weak interactions, and perform its first numerical calculations for bosons with a variable nonzero-range potential. For attractive interactions, we identify several three-body resonances at which the three-body scattering hypervolume becomes divergent or anomalously large.
↳ cond-mat.quant-gasnucl-thphysics.atom-phquant-ph11 citations

Affiliations

first authorsco-authorsvia INSPIRE

Global Anomalies, Discrete Symmetries, and Hydrodynamic Effective Actions

Three-body scattering hypervolumes of particles with short-range interactions

Affiliations