Now showing items 1-14 of 14

    • BPS Skyrmions as neutron stars 

      Adam, Christoph; Naya Rodríguez, Carlos; Sánchez Guillén, José Joaquín; Vázquez López, Ricardo Antonio; Wereszczynski, Andrzej (Elsevier, 2015)
      The BPS Skyrme model has been demonstrated already to provide a physically intriguing and quantita-tively reliable description of nuclear matter. Indeed, the model has both the symmetries and the energy–momentum tensor of ...
    • BPS soliton-impurity models and supersymmetry 

      Adam, Christoph; Fernández Queiruga, José Manuel; Wereszczynski, Andrzej (Springer, 2019)
      We find supersymmetric extensions of the half-BPS soliton-impurity models in (1+1) dimensions which preserve half of the N = 1 supersymmetry. This is related to the fact that in the bosonic sector (i.e., the half-BPS ...
    • BPS submodels of the Skyrme mode 

      Adam, Christoph; Sánchez Guillén, Joaquín; Wereszczynski, Andrzej (Elsevier, 2017-04-05)
      We show that the standard Skyrme model without pion mass term can be expressed as a sum of two BPS submodels, i.e., of two models whose static field equations, independently, can be reduced to first order equations. Further, ...
    • BPS submodels of the Skyrme model 

      Adam, Christoph; Sánchez Guillén, José Joaquín; Wereszczynski, Andrzej (Elsevier, 2017)
      We show that the standard Skyrme model without pion mass term can be expressed as a sum of two BPS submodels, i.e., of two models whose static field equations, independently, can be reduced to first order equations. Further, ...
    • Exactly solvable gravitating perfect fluid solitons in (2 + 1) dimensions 

      Adam, Christoph; Romanczukiewicz, T.; Wachla, M.; Wereszczynski, Andrzej (Springer, 2018)
      The Bogomolnyi-Prasad-Sommerfield (BPS) baby Skyrme model coupled to gravity is considered. We show that in an asymptotically flat space-time the model still possesses the BPS property, i.e., admits a BPS reduction to first ...
    • Incompressible topological solitons 

      Adam, Christoph; Naya Rodríguez, Carlos; Oleś, Katarzyna; Romańczukiewicz, Tomasz; Sánchez Guillén, Joaquín; Wereszczynski, Andrzej (APS Physics, 2020)
      We discover a new class of topological solitons. These solitons can exist in a space of infinite volume like, e.g., Rn, but they cannot be placed in any finite volume because the resulting formal solutions have infinite ...
    • Integrability and Dif feomorphisms on Target Space 

      Adam, Christoph; Sánchez Guillén, Joaquín; Wereszczynski, Andrzej (National Academy of Science of Ukraine, 2007)
      We briefly review the concepts of generalized zero curvature conditions and integrability in higher dimensions, where integrability in this context is related to the existence of infinitely many conservation laws. Under ...
    • Magnetothermodynamics of BPS baby skyrmions 

      Adam, Christoph; Romanczukiewicz, T.; Sánchez Guillén, José Joaquín; Wereszczynski, Andrzej (Springer, 2014)
      The magnetothermodynamics of skyrmion type matter described by the gauged BPS baby Skyrme model at zero temperature is investigated. We prove that the BPS property of the model is preserved also for boundary conditions ...
    • Roper resonances and quasi-normal modes of Skyrmions 

      Adam, Christoph; Haberichter, M.; Romanczukiewicz, T.; Wereszczynski, Andrzej (Springer, 2018)
      Radial vibrations of charge one hedgehog Skyrmions in the full Skyrme model are analysed. We investigate how the properties of the lowest resonance modes (quasi normal modes) — their frequencies and widths — depend on the ...
    • Solvable self-dual impurity models 

      Adam, Christoph; Oles, K.; Fernández Queiruga, José Manuel; Romanczukiewicz, T.; Wereszczynski, Andrzej (Springer, 2019)
      We find a family of (half) self-dual impurity models such that the self-dual (BPS) sector is exactly solvable, for any spatial distribution of the impurity, both in the topologically trivial case and for kink (or antikink) ...
    • Spectral walls in soliton collisions 

      Adam, Christoph; Oles, K.; Romanczukiewicz, T.; Wereszczynski, Andrzej (American Physical Society, 2019)
      During defect-antidefect scattering, bound modes frequently disappear into the continuous spectrum before the defects themselves collide. This leads to a structural, nonperturbative change in the spectrum of small excitations. ...
    • The phi(4) model with the BPS preserving defect 

      Adam, Christoph; Romanczukiewicz, T.; Wereszczynski, Andrzej (Springer, 2019)
      The phi(4) model is coupled to an impurity in a way that preserves one-half of the BPS property. This means that the antikink-impurity bound state is still a BPS solution, i.e., a zero-pressure solution saturating the ...
    • The volume of a soliton 

      Adam, Christoph; Haberichter, M.; Wereszczynski, Andrzej (Elsevier, 2016-01-11)
      There exists, in general, no unique definition of the size (volume, area, etc., depending on dimension) of a soliton. Here we demonstrate that the geometric volume (area etc.) of a soliton is singled out in the sense that ...
    • Topological phase transitions in the gauged BPS baby Skyrme model 

      Adam, Christoph; Naya Rodríguez, Carlos; Romanczukiewicz, T.; Sánchez Guillén, José Joaquín; Wereszczynski, Andrzej (Springer, 2015)
      We demonstrate that the gauged BPS baby Skyrme model with a double vacuum potential allows for phase transitions from a non-solitonic to a solitonic phase, where the latter corresponds to a ferromagnetic liquid. Such a ...





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