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| DOI | 10.1140/EPJC/S10052-020-8275-1 | ||||
| Año | 2020 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
The low energy limit of QCD admits (crystals of) superconducting Baryonic tubes at finite density. We begin with the Maxwell-gauged Skyrme model in (3 + 1)-dimensions (which is the low energy limit of QCD in the leading order of the large N expansion). We construct an ansatz able to reduce the seven coupled field equations in a sector of high Baryonic charge to just one linear Schrodinger-like equation with an effective potential (which can be computed explicitly) periodic in the two spatial directions orthogonal to the axis of the tubes. The solutions represent ordered arrays of Baryonic superconducting tubes as (most of) the Baryonic charge and total energy is concentrated in the tube-shaped regions. They carry a persistent current (which vanishes outside the tubes) even in the limit of vanishing U(1) gauge field: such a current cannot be deformed continuously to zero as it is tied to the topological charge. Then, we discuss the subleading corrections in the 't Hooft expansion to the Skyrme model (called usually L-6, L-8 and so on). Remarkably, the very same ansatz allows to construct analytically these crystals of superconducting Baryonic tubes at any order in the 't Hooft expansion. Thus, no matter how many subleading terms are included, these ordered arrays of gauged solitons are described by the same ansatz and keep their main properties manifesting a universal character. On the other hand, the subleading terms can affect the stability properties of the configurations setting lower bounds on the allowed Baryon density.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Canfora, Fabrizio | Hombre |
Centro de Estudios Científicos - Chile
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| 2 | LAGOS-LOPEZ, MARCELO ALEXIS | Mujer |
Universidad Austral de Chile - Chile
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| 3 | Vera, Aldo | Hombre |
Centro de Estudios Científicos - Chile
Universidad Austral de Chile - Chile |
| Fuente |
|---|
| FONDECYT |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Comisión Nacional de Investigación Científica y Tecnológica |
| Comisión Nacional de Investigación CientÃfica y Tecnológica |
| Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica |
| Chilean Government through the Centers of Excellence Base Financing Program of CONICYT |
| CECs |
| Fondo Nacional de Desarrollo CientÃfico, Tecnológico y de Innovación Tecnológica |
| Agradecimiento |
|---|
| F. C. has been funded by Fondecyt Grants 1200022. M. L. and A. V. are funded by FONDECYT post-doctoral grant 3190873 and 3200884. The Centro de Estudios Cientificos (CECs) is funded by the Chilean Government through the Centers of Excellence Base Financing Program of Conicyt. |
| F. C. has been funded by Fondecyt Grants 1200022. M. L. and A. V. are funded by FONDECYT post-doctoral grant 3190873 and 3200884. The Centro de Estudios Científicos (CECs) is funded by the Chilean Government through the Centers of Excellence Base Financing Program of Conicyt. |