A lower bound on the renormalized Nelson model
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DOI: 10.1063/1.5008831
Abstract: We provide explicit lower bounds for the ground-state energy of the renormalized Nelson model in terms of the coupling constant $\alpha$ and the number of particles $N$, uniform in the meson mass and valid even… read more here.
Keywords: nelson model; model; renormalized nelson; lower bounds ... See more keywords
Slow approach to adiabaticity in many-body non-Hermitian systems: The Hatano-Nelson model
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DOI: 10.1103/physrevb.111.045130
Abstract: We explore the near adiabatic dynamics in a non-Hermitian quantum many-body system by investigating a finite-time ramp of the imaginary vector potential in the interacting Hatano-Nelson model. The excess energy, the Loschmidt echo, and the… read more here.
Keywords: nelson model; many body; non hermitian; adiabaticity ... See more keywords