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      Axion Electrodynamics from Infeld-van der Waerden formalisms

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          Abstract

          We will explore the spacetime phase structure inside of the Infeld-van der Waerden formalisms showing that Maxwell theory in this scenario leads us to an axion-like phase electrodynamics, suggesting then that its phase may originate the axion field.

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          The quantum spin Hall effect and topological insulators

          , (2010)
          In topological insulators, spin-orbit coupling and time-reversal symmetry combine to form a novel state of matter predicted to have exotic physical properties.
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            Lattice Fermions

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              Solitons of axion-dilaton gravity

              I. Bakas (1996)
              We use soliton techniques of the two-dimensional reduced beta-function equations to obtain non-trivial string backgrounds from flat space. These solutions are characterized by two integers (n, m) referring to the soliton numbers of the metric and axion-dilaton sectors respectively. We show that the Nappi-Witten universe associated with the SL(2) x SU(2) / SO(1, 1) x U(1) CFT coset arises as an (1, 1) soliton in this fashion for certain values of the moduli parameters, while for other values of the soliton moduli we arrive at the SL(2)/SO(1, 1) x SO(1, 1)^2 background. Ordinary 4-dim black-holes arise as 2-dim (2, 0) solitons, while the Euclidean worm-hole background is described as a (0, 2) soliton on flat space. The soliton transformations correspond to specific elements of the string Geroch group. These could be used as starting point for exploring the role of U-dualities in string compactifications to two dimensions.
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                Author and article information

                Journal
                26 November 2017
                Article
                1711.09496
                faf1b02b-2421-4a39-a975-2002eac32ae6

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                13 pages
                gr-qc

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