5 papers
Exceptional Spin Liquids from Couplings to the Environment
Kang Yang, Siddhardh C. Morampudi, Emil J. Bergholtz
We establish the appearance of a qualitatively new type of spin liquid with emergent exceptional points when coupling to the environment. We consider an open system of the Kitaev h…
Hamiltonian Dynamics of a Sum of Interacting Random Matrices
Matteo Bellitti, Siddhardh Morampudi, Chris R. Laumann
In ergodic quantum systems, physical observables have a non-relaxing component if they "overlap" with a conserved quantity. In interacting microscopic models, how to isolate the no…
Spectroscopy of spinons in Coulomb quantum spin liquids
Siddhardh C. Morampudi, Frank Wilczek, Chris R. Laumann
We calculate the effect of the emergent photon on threshold production of spinons in Coulomb spin liquids such as quantum spin ice. The emergent Coulomb interaction modifies…
Universal entanglement of typical states in constrained systems
Siddhardh C. Morampudi, Anushya Chandran, Chris R. Laumann
Local constraints play an important role in the effective description of many quantum systems. Their impact on dynamics and entanglement thermalization are just beginning to be unr…
Many-body systems with random spatially local interactions
Siddhardh C. Morampudi, Chris R. Laumann
We extend random matrix theory to consider randomly interacting spin systems with spatial locality. We develop several methods by which arbitrary correlators may be systematically…