• Corpus ID: 256389533

Pseudo-Goldstone modes and dynamical gap generation from order-by-thermal-disorder

@inproceedings{Khatua2023PseudoGoldstoneMA,
  title={Pseudo-Goldstone modes and dynamical gap generation from order-by-thermal-disorder},
  author={Subhankar Khatua and Michel J. P. Gingras and Jeffrey G. Rau},
  year={2023}
}
, 
[PDF] Semantic Reader

Figures from this paper

85 References

Do quantum spin liquids exist

The search for the hypothetical state has been a 43-year-long slog, one whose end may now be in sight.

Order by disorder in an anisotropic pyrochlore lattice antiferromagnet

The properties of the classical Heisenberg pyrochlore lattice antiferromagnet with local planar single ion anisotropy are discussed. The zero temperature ground state is found to be macroscopically…

Energetic selection of ordered states in a model of the Er2Ti2O7 frustrated pyrochlore XY antiferromagnet

We consider the possibility that the discrete long-range ordered states of Er2Ti2O7 are selected energetically at the mean field level as an alternative scenario that suggests selection via thermal…

Compass-Heisenberg model on the square lattice —Spin order and elementary excitations

We explore the physics of the anisotropic compass model under the influence of perturbing Heisenberg interactions and present the phase diagram with multiple quantum phase transitions. The…

Pseudo-Goldstone Gaps and Order-by-Quantum Disorder in Frustrated Magnets.

It is shown that this gap can be exactly computed at leading order in 1/S inspin-wave theory from the mean curvature of the classical and quantum zero-point energies-without the need to consider any spin-wave interactions.

Existence of Long-Range Order in One and Two Dimensions

It is pointed out that a rigorous inequality first proved by Bogoliubov may be used to rule out the existence of quasi-averages (or long-range order) in Bose and Fermi systems for one and two…

Ordering due to disorder in a frustrated vector antiferromagnet.

  • Henley
  • Physics
    Physical review letters
  • 1989
Degeneracy-breaking free-energy terms arise from thermal (or quantum) fluctuations, which select for collinear states, and from dilution, which selects for anticollinear (yet long-range ordered) states.

Approximate symmetries and pseudo-goldstone bosons

In theories with spontaneously broken local symmetries, renormalizability sometimes forces the scalar field interactions to have a larger group of symmetries than the gauge field interactions.…

Order-by-disorder in the XY pyrochlore antiferromagnet

We investigate the properties of the XY pyrochlore antiferromagnet with local h111i planar anisotropy. We find the ground states and show that the configurational groun d state entropy is…

Counting Rules of Nambu–Goldstone Modes

When global continuous symmetries are spontaneously broken, there appear gapless collective excitations called Nambu–Goldstone modes (NGMs) that govern the low-energy property of the system. The…
...