179 citations · 445 across the 11 of their papers we have counts for
11 papers
Symmetry analysis of crystalline spin textures in dipolar spinor condensates
R. W. Cherng, E. Demler
We study periodic crystalline spin textures in spinor condensates with dipolar interactions via a systematic symmetry analysis of the low-energy effective theory. By considering sy…
Neutral skyrmion configurations in the low-energy effective theory of spinor condensate ferromagnets
R. W. Cherng, E. Demler
We study the low-energy effective theory of spinor condensate ferromagnets for the superfluid velocity and magnetization degrees of freedom. This effective theory describes the com…
Topological quantum phase transitions of ultracold fermions in optical lattices
R. W. Cherng, C. A. R. Sá de Melo
We consider the possibility of topological quantum phase transitions of ultracold fermions in optical lattices, which can be studied as a function of interaction strength or atomic…
Roton softening and supersolidity in Rb spinor condensates
R. W. Cherng, E. Demler
Superfluids with a tendency towards periodic crystalline order have both a phonon and roton like spectrum of collective modes. The softening of the roton spectrum provides one rout…
Dynamical instability of the XY spiral state of ferromagnetic condensates
R. W. Cherng, V. Gritsev, D. M. Stamper-Kurn +1
We calculate the spectrum of collective excitations of the XY spiral state prepared adiabatically or suddenly from a uniform ferromagnetic F=1 condensate. For spiral wavevectors pa…
Superfluidity and magnetism in multicomponent ultracold fermions
R. W. Cherng, Gil Refael, Eugene Demler
We study the interplay between superfluidity and magnetism in a multicomponent gas of ultracold fermions. Ward-Takahashi identities constrain possible mean-field states describing…