We investigate the special case of the chiral magnet with vanishing Heisenberg exchange energy, whose axisymmetric Skyrmion solution has previously been found. The dynamical equations of this model look like inviscid fluid flow, and by investigating path lines of this flow we can construct explicit static and dynamic solutions. We find an infinite-dimensional family of static Skyrmions that are related to the axisymmetric Skyrmion by co-ordinate transformations thus discovering a new moduli space, and further infinite-dimensional families of axisymmetric and non-axisymmetric breather-like supercompactons.

Moduli spaces and breather dynamics of analytic solutions in Heisenberg exchange-free chiral magnets

Menta, Roberto
2026

Abstract

We investigate the special case of the chiral magnet with vanishing Heisenberg exchange energy, whose axisymmetric Skyrmion solution has previously been found. The dynamical equations of this model look like inviscid fluid flow, and by investigating path lines of this flow we can construct explicit static and dynamic solutions. We find an infinite-dimensional family of static Skyrmions that are related to the axisymmetric Skyrmion by co-ordinate transformations thus discovering a new moduli space, and further infinite-dimensional families of axisymmetric and non-axisymmetric breather-like supercompactons.
2026
Settore MATH-04/A - Fisica matematica
Settore PHYS-04/A - Fisica teorica della materia, modelli, metodi matematici e applicazioni
Magnetic materials; Soliton solutions; Skyrmions; Quasiparticle; Skyrmion dynamics; Sigma model
   Singularities in General Relativity
   SINGinGR
   European Commission
   Horizon Europe Framework Programme - European Research Council - HORIZON ERC Grants
   101078061
File in questo prodotto:
File Dimensione Formato  
021901_1_5.0257611.pdf

embargo fino al 08/02/2027

Tipologia: Published version
Licenza: Non specificata
Dimensione 6.96 MB
Formato Adobe PDF
6.96 MB Adobe PDF   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/173099
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
  • OpenAlex ND
social impact