432 citations · 2.7k across the 59 of their papers we have counts for
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Effective Hamiltonians for some highly frustrated magnets
Doron L. Bergman, Ryuichi Shindou, Gregory A. Fiete +1
In prior work, the authors developed a method of degenerate perturbation theory about the Ising limit to derive an effective Hamiltonian describing quantum fluctuations in a half-p…
Degenerate perturbation theory of quantum fluctuations in a pyrochlore antiferromagnet
Doron L. Bergman, Ryuichi Shindou, Gregory A. Fiete +1
We study the effect of quantum fluctuations on the half-polarized magnetization plateau of a pyrochlore antiferromagnet. We argue that an expansion around the easy axis limit is ap…
Mechanisms of degeneracy breaking in pyrochlore antiferromagnets
Doron L. Bergman, Ryuichi Shindou, Gregory A. Fiete +1
Motivated by the low temperature magnetization curves of several spinel chromites, we theoretically study classical mechanisms of degeneracy lifting in pyrochlore antiferromagnets.…
Artificial electric field in Fermi Liquids
Ryuichi Shindou, Leon Balents
Based on the Keldysh formalism, we derive an effective Boltzmann equation for a quasi-particle associated with a particular Fermi surface in an interacting Fermi liquid. This provi…