Publications [#336441] of Shailesh Chandrasekharan

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Papers Published
  1. Ayyar, V; Chandrasekharan, S, Generating a mass gap using Feynman diagrams in an asymptotically free theory, edited by Della Morte, M; Fritzsch, P; Gámiz Sánchez, E; Pena Ruano, C, EPJ Web of Conferences, vol. 175 (March, 2018), pp. 11010-11010, E D P SCIENCES [doi] .

    Abstract:
    Using the example of a two dimensional four-fermion lattice field theory, we show that Feynman diagrams can generate a mass gap in a theory with massless fermions that interact via a marginally relevant coupling. We show this by introducing an infrared cutoff that makes the perturbation series for the partition function convergent. We use a Monte Carlo approach to sample sufficiently high orders of diagrams and thus expose the presence of the mass gap.

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