Variational calculation of the excited states in the sinh-Gordon and sine-Gordon field theories
19933 pages
Published in:
- Chin.Phys.Lett. 10 (1993) 8-10
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Abstract: (IOP)
The one- and two-particle states in the sinh-Gordon and sine-Gordon models in (1+1) dimensions are investigated by using the gaussian wave-functional approach. We find that (i) the renormalized mass parameter is just the variational one-particle mass, and (ii) there are no two-particle bound states in the sinh-Gordon model, but in the sine-Gordon model, there exist two-particle bound states.- sinh-Gordon equation
- sine-Gordon equation
- dimension: 2
- particle: excited state
- excited state: two-particle
- mass: renormalization
- renormalization: mass
- bound state: (2particle)
- mathematical methods: variational
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