Fluctuations in Dual Chiral Density Waves
Abstract
We study low-energy collective excitations in the so-called dual chiral density wavewhere the chiral condensate is spatially modulated with a nonzero total wavevector in one spatial direction. Through a symmetry argument, we find that a locking of flavor and translational symmetries arises. We also find that the dispersion relations for the Nambu-Goldstone modes are spatially anisotropic, and become softer in the normal direction of the modulation wavevector. We finally discuss the stability against fluctuations around the inhomogeneous chiral condensate, and then show that the condensate is stable as a quasi-one-dimensional phase with a quasi-long-range order, like liquid crystals.
- Publication:
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Acta Astronomica Sinica
- Pub Date:
- November 2015
- Bibcode:
- 2015AcASn..56S..19L
- Keywords:
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- QCD phase diagram;
- inhomogeneous chiral condensates;
- quasi-long-range order