On the vacua in the massless Thirring model
نویسنده
چکیده
We calculate the most general effective potential for the massless Thirring model in dependence on all local fields of collective fermion–antifermion excitations. We analyse the minima of this potential describing different vacua of the quantum system. We confirm the existence of the absolute minimum found in EPJC 20, 723 (2001) corresponding to a chirally broken phase of the massless Thirring model. As has been shown in EPJC 20, 723 (2001) this minimum is stable under quantum fluctuations. PACS: 02.30.Ik, 11.10.Cd, 11.10.Ef, 11.10.Kk E–mail: [email protected], Tel.: +43–1–58801–14261, Fax: +43–1–58801–14299 E–mail: [email protected], Tel.: +43–1–58801–14261, Fax: +43–1–58801–14299 Permanent Address: State Polytechnical University, Department of Nuclear Physics, 195251 St. Petersburg, Russian Federation 1
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