840 citations · 3.6k across the 110 of their papers we have counts for
6 papers · 1 filter
Positivity and Fermionic Dense Matter
Deog Ki Hong, Stephen D. H. Hsu
Euclidean dense matter generically suffers from the fermion sign problem. However, we argue that the sign problem is absent if one considers only low-energy degrees of freedom. Spe…
Holography, Entropy and Extra Dimensions
Deog Ki Hong, Stephen D. H. Hsu
We show that higher dimensional models (brane worlds) in which the scale of quantum gravity is much smaller than the apparent scale GeV are in conflict wit…
Global Spread of Infectious Diseases
S. Hsu, A. Zee
We develop simple models for the global spread of infectious diseases, emphasizing human mobility via air travel and the variation of public health infrastructure from region to re…
Cosmology of Nonlinear Oscillations
Stephen D. H. Hsu
The nonlinear oscillations of a scalar field are shown to have cosmological equations of state with ranging from . We investigate the possibility that the d…
Positivity and Dense Matter
Deog Ki Hong, Stephen D. H. Hsu
We elaborate on previous results concerning the positivity of the Euclidean path integral measure for low-energy modes in dense fermionic matter. We show that the sign problem usua…
High Temperature Superfluid and Feshbach Resonance
Deog Ki Hong, Stephen D. H. Hsu
We study an effective field theory describing cold fermionic atoms near a Feshbach resonance. The theory gives a unique description of the dynamics in the limit that the energy of…