81 citations · 171 across the 23 of their papers we have counts for
23 papers
Concise configuration interaction expansions for three fermions in six orbitals
Alex D. Gottlieb, Norbert J. Mauser, J. M. Zhang
The Hilbert space for three fermions in six orbitals, lately dubbed the "Borland-Dennis setting," is a proving ground for insights into electronic structure. Borland and Dennis dis…
Nonfreeness and related functionals for measuring correlation in many-fermion states
Alex D. Gottlieb, Norbert J. Mauser
This article is a brief review of "nonfreeness" and related measures of "correlation" for many-fermion systems. The many-fermion states we deem "uncorrelated" are the gauge-invaria…
Correlation in fermion or boson systems as the minimum of entropy relative to all free states
Alex D. Gottlieb, Norbert J. Mauser
In the context of many-fermion systems, "correlation" refers to the inadequacy of an independent-particle model. Using "free" states as archetypes of our independent-particle model…
Quantum and thermal fluctuations in bosonic Josephson junctions
Bruno Julia-Diaz, Alex D. Gottlieb, Joan Martorell +1
We use the Bose-Hubbard Hamiltonian to study quantum fluctuations in canonical equilibrium ensembles of bosonic Josephson junctions at relatively high temperatures, comparing the r…
Strongly separated pairs of core electrons in computed ground states of small molecules
Alex D. Gottlieb, Rada M. Weishaeupl
We have performed full configuration interaction computations of the ground states of the molecules Be, BeH_2, Li, LiH, B, and BH and verified that the core electrons constitute "s…
Quantum noise thermometry for bosonic Josephson junctions in the mean field regime
Alex D. Gottlieb, Thorsten Schumm
Bosonic Josephson junctions can be realized by confining ultracold gases of bosons in multi-well traps, and studied theoretically with the -site Bose-Hubbard model. We show that…