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Article overview
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Non-perturbative Effects in Generalized Schwinger Models | | Howard Georgi
; Brian Warner
; | | Date: |
9 Aug 2019 | | Abstract: | We analyze generalizations of the Schwinger model, with more massless
fermions and more vector fields. These have conformal sectors that survive at
long distances. We find that in addition to "unparticle operators" with
non-zero anomalous dimensions, some of these models contain 0-dimension
operators with calculable vacuum expectation values. Cluster decomposition
applied to correlation functions involving these operators yields nontrivial
and calculable nonperturbative constraints on unparticle operator correlation
functions. One consequence of these constraints is "conformal coalescence" in
which linear combinations of short distance operators can disappear from the
long-distance theory. | | Source: | arXiv, 1908.3279 | | Services: | Forum | Review | PDF | Favorites | |
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