Low-energy electron-phonon effective action from symmetry analysis
Based on a detailed symmetry analysis, we state the general rules to build up the effective low-energy field theory describing a system of electrons weakly interacting with the lattice degrees of freedom. The basic elements in our construction are what we call the ``memory tensors,'' which...
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126242 |
| Aporte de: |
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I19-R120-10915-126242 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Effective action Physics Lattice (order) Electron Low energy Electron phonon Graphene Theoretical physics Dirac fermion Homogeneous space |
| spellingShingle |
Física Effective action Physics Lattice (order) Electron Low energy Electron phonon Graphene Theoretical physics Dirac fermion Homogeneous space Cabra, Daniel Carlos Grandi, Nicolás Esteban Silva, Guillermo Ariel Sturla, Mauricio Low-energy electron-phonon effective action from symmetry analysis |
| topic_facet |
Física Effective action Physics Lattice (order) Electron Low energy Electron phonon Graphene Theoretical physics Dirac fermion Homogeneous space |
| description |
Based on a detailed symmetry analysis, we state the general rules to build up the effective low-energy field theory describing a system of electrons weakly interacting with the lattice degrees of freedom. The basic elements in our construction are what we call the ``memory tensors,'' which keep track of the microscopic discrete symmetries into the coarse-grained action. The present approach can be applied to lattice systems in arbitrary dimensions and in a systematic way to any desired order in derivatives. We apply the method to the honeycomb lattice and reobtain the by-now well-known effective action of Dirac fermions coupled to fictitious gauge fields. As a second example, we derive the effective action for electrons in the kagome lattice, where our approach allows us to obtain in a simple way the low-energy electron-phonon coupling terms. |
| format |
Articulo Articulo |
| author |
Cabra, Daniel Carlos Grandi, Nicolás Esteban Silva, Guillermo Ariel Sturla, Mauricio |
| author_facet |
Cabra, Daniel Carlos Grandi, Nicolás Esteban Silva, Guillermo Ariel Sturla, Mauricio |
| author_sort |
Cabra, Daniel Carlos |
| title |
Low-energy electron-phonon effective action from symmetry analysis |
| title_short |
Low-energy electron-phonon effective action from symmetry analysis |
| title_full |
Low-energy electron-phonon effective action from symmetry analysis |
| title_fullStr |
Low-energy electron-phonon effective action from symmetry analysis |
| title_full_unstemmed |
Low-energy electron-phonon effective action from symmetry analysis |
| title_sort |
low-energy electron-phonon effective action from symmetry analysis |
| publishDate |
2013 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126242 |
| work_keys_str_mv |
AT cabradanielcarlos lowenergyelectronphononeffectiveactionfromsymmetryanalysis AT grandinicolasesteban lowenergyelectronphononeffectiveactionfromsymmetryanalysis AT silvaguillermoariel lowenergyelectronphononeffectiveactionfromsymmetryanalysis AT sturlamauricio lowenergyelectronphononeffectiveactionfromsymmetryanalysis |
| bdutipo_str |
Repositorios |
| _version_ |
1764820450231189505 |