H. Stoof - Academia.edu (original) (raw)

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Papers by H. Stoof

Lecture Notes in Physics, 2011

Physical Review Letters, 2004

Physical Review B, 1994

... A gas of doubly spin-polarized hydrogen atoms ad-sorbed on superfluid helium with a binding e... more ... A gas of doubly spin-polarized hydrogen atoms ad-sorbed on superfluid helium with a binding energy of about one kelvin would be ... In particular, we can obtain the intrinsic two-body rate without degeneracy effects by using l i & =l p, p' & and tak-ing the limit p,p'J, O for pAp'. ...

Physical Review A, 2006

We show that the Comment by Diener and Ho [Phys. Rev. A 73, 017601 (2006)] is based on the misund... more We show that the Comment by Diener and Ho [Phys. Rev. A 73, 017601 (2006)] is based on the misunderstanding that the Hamiltonian used by Dickerscheid to describe Feshbach resonances in an optical lattice is a microscopic Hamiltonian as opposed to an effective Hamiltonian.

Journal of High Energy Physics, 2013

We continue our recently proposed holographic description of single-particle correlation function... more We continue our recently proposed holographic description of single-particle correlation functions for four-dimensional chiral fermions with Lifshitz scaling at zero chemical potential, paying particular attention to the dynamical exponent z = 2. We present new results for the spectral densities and dispersion relations at non-zero momenta and temperature. In contrast to the relativistic case with z = 1, we find the existence of a quantum phase transition from a non-Fermi liquid into a Fermi liquid in which two Fermi surfaces spontaneously form, even at zero chemical potential. Our findings show that the boundary system behaves like an undoped Weyl semimetal.

Journal of High Energy Physics, 2012

We study correlation functions of elementary fermions in strongly interacting field theories usin... more We study correlation functions of elementary fermions in strongly interacting field theories using the AdS/CFT correspondence. This correspondence generically associates bulk fields to composite operators in field theory. We modify the holographic prescription in order to obtain correlators that correspond to fermonic single-particle excitations by introducing a dynamical fermionic source localized on a UV brane in a holographic background. We work out the conditions when these correlators obey the zeroth frequency sum-rule satisfied by angle-resolved photo-emission spectroscopy (ARPES) and are thus directly relevant to the AdS/CMT correspondence. To illustrate our techniques, we study field theories at zero chemical potential with an arbitrary dynamical exponent z, i.e., the Lifshitz invariant conformal field theories, including the usual relativistic case z = 1.