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hep-th2000★ 34 cited
Fractional and Integer Charges from Levinson's Theorem
E. Farhi, N. Graham, R. L. Jaffe +1
We compute fractional and integer fermion quantum numbers of static background field configurations using phase shifts and Levinson's theorem. By extending fermionic scattering the…
hep-th2000★ 49 cited
Heavy Fermion Stabilization of Solitons in 1+1 Dimensions
E. Farhi, N. Graham, R. L. Jaffe +1
We find static solitons stabilized by quantum corrections in a (1+1)-dimensional model with a scalar field chirally coupled to fermions. This model does not support classical solit…