Fractional-spin integrals of motion for the boundary sine-gordon model at the free fermion point

Luca Mezincescu

doi:10.1142/S0217751X98001402

Fractional-spin integrals of motion for the boundary sine-gordon model at the free fermion point

Luca Mezincescu

Physics

Research output: Contribution to journal › Article

48 Scopus citations

Abstract

We construct integrals of motion (IM) for the sine-Gordon model with boundary at the free fermion point (β² = 4π) which correctly determine the boundary S matrix. The algebra of these IM ("boundary quantum group" at q = 1) is a one-parameter family of infinite-dimensional subalgebras of twisted sl(2). We also propose the structure of the fractional-spin IM away from the free fermion point (β² ≠ 4π).

Original language	English (US)
Pages (from-to)	2747-2764
Number of pages	18
Journal	International Journal of Modern Physics A
Volume	13
Issue number	16
DOIs	https://doi.org/10.1142/S0217751X98001402
State	Published - Jan 1 1998

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Astronomy and Astrophysics

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Mezincescu, L. (1998). Fractional-spin integrals of motion for the boundary sine-gordon model at the free fermion point. International Journal of Modern Physics A, 13(16), 2747-2764. https://doi.org/10.1142/S0217751X98001402

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