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Low-Energy Quantum Effective Action for Relativistic Superfluids

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arxiv hep-ph/0204199 v2 pith:3WEEO6BO submitted 2002-04-17 hep-ph gr-qcnucl-th

D.T.Son (INT) This is my paper · ORCID
classification hep-phgr-qcnucl-th
keywords actioneffectivegoldstonealphabosonformalismlow-energyquantum
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider relativistic superfluids where the U(1) baryon symmetry is spontaneously broken. Using the formalism of the quantum effective action, we show that the low-energy dynamics of the superfluid Goldstone boson is completely determined by the equation of state. Applying the general formalism to asymptotically high densities, we find the effective action for the superfluid Goldstone field to leading order in alpha_s, and show that terms containing fifth and higher powers of the Goldstone boson appear only at the alpha_s^2 level with known coefficients.

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Cited by 6 Pith papers

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