Unbalanced Stückelberg holographic superconductors with backreaction

Ahmad Hafshejani (Physics Department, Yazd University, Yazd, 89195-741, Iran) ; Seyed Mansoori (Faculty of Physics, Shahrood University of Technology, Shahrood, Iran)

We numerically investigate some properties of unbalanced Stückelberg holographic superconductors, by considering backreaction effects of fields on the background geometry. More precisely, we study the impacts of the chemical potential mismatch and Stückelberg mechanism on the condensation and conductivity types (electrical, spin, mixed, thermo-electric, thermo-spin and thermal conductivity). Our results show that the Stückelberg’s model parameters C α and α not only have significant impacts on the phase transition, but also affect the conductivity pseudo-gap and the strength of conductivity fluctuations. Moreover, the effects of these parameters on a system will be gradually reduced as the imbalance grows. We also find that the influence of α on the amplitude of conductivity fluctuations depends on the magnitude of the both C α and δμ/μ in the electric and thermal conductivity cases. This results in that increasing α can damp the conductivity fluctuations of an unbalanced system in contrast to balanced ones.

{
  "license": [
    {
      "url": "https://creativecommons.org/licenses/by/3.0", 
      "license": "CC-BY-3.0"
    }
  ], 
  "copyright": [
    {
      "material": "Article", 
      "holder": "The Author(s)", 
      "year": "2019"
    }
  ], 
  "control_number": "44663", 
  "_oai": {
    "updated": "2019-01-09T13:06:20Z", 
    "id": "oai:repo.scoap3.org:44663", 
    "sets": [
      "JHEP"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "Iran", 
          "value": "Physics Department, Yazd University, Yazd, 89195-741, Iran", 
          "organization": "Yazd University"
        }
      ], 
      "surname": "Hafshejani", 
      "email": "ahmah.jamalii86@gmail.com", 
      "full_name": "Hafshejani, Ahmad", 
      "given_names": "Ahmad"
    }, 
    {
      "affiliations": [
        {
          "country": "Iran", 
          "value": "Faculty of Physics, Shahrood University of Technology, Shahrood, Iran", 
          "organization": "Shahrood University of Technology"
        }
      ], 
      "surname": "Mansoori", 
      "email": "shosseini@shahroodut.ac.ir", 
      "full_name": "Mansoori, Seyed", 
      "given_names": "Seyed"
    }
  ], 
  "_files": [
    {
      "checksum": "md5:60c56a59e0c985f099f39c5cd464e30f", 
      "filetype": "xml", 
      "bucket": "691d3a95-90a0-4641-8e61-ea5d7afe0241", 
      "version_id": "7900de14-51e8-47ea-86e7-d5846ebfaf47", 
      "key": "10.1007/JHEP01(2019)015.xml", 
      "size": 10738
    }, 
    {
      "checksum": "md5:368db3400dc04ac56cf37b94d6ad2f27", 
      "filetype": "pdf/a", 
      "bucket": "691d3a95-90a0-4641-8e61-ea5d7afe0241", 
      "version_id": "696bfae7-4c40-4ee1-bfa8-a43775d85032", 
      "key": "10.1007/JHEP01(2019)015_a.pdf", 
      "size": 4778264
    }
  ], 
  "record_creation_date": "2019-01-09T14:06:18.997318", 
  "titles": [
    {
      "source": "Springer", 
      "title": "Unbalanced St\u00fcckelberg holographic superconductors with backreaction"
    }
  ], 
  "collections": [
    {
      "primary": "Journal of High Energy Physics"
    }
  ], 
  "dois": [
    {
      "value": "10.1007/JHEP01(2019)015"
    }
  ], 
  "publication_info": [
    {
      "page_end": "28", 
      "journal_title": "Journal of High Energy Physics", 
      "material": "article", 
      "journal_volume": "2019", 
      "year": 2019, 
      "page_start": "1", 
      "journal_issue": "1"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "abstracts": [
    {
      "source": "Springer", 
      "value": "We numerically investigate some properties of unbalanced St\u00fcckelberg holographic superconductors, by considering backreaction effects of fields on the background geometry. More precisely, we study the impacts of the chemical potential mismatch and St\u00fcckelberg mechanism on the condensation and conductivity types (electrical, spin, mixed, thermo-electric, thermo-spin and thermal conductivity). Our results show that the St\u00fcckelberg\u2019s model parameters C  \u03b1  and \u03b1 not only have significant impacts on the phase transition, but also affect the conductivity pseudo-gap and the strength of conductivity fluctuations. Moreover, the effects of these parameters on a system will be gradually reduced as the imbalance grows. We also find that the influence of \u03b1 on the amplitude of conductivity fluctuations depends on the magnitude of the both C  \u03b1  and \u03b4\u03bc/\u03bc in the electric and thermal conductivity cases. This results in that increasing \u03b1 can damp the conductivity fluctuations of an unbalanced system in contrast to balanced ones."
    }
  ], 
  "imprints": [
    {
      "date": "2019-01-02", 
      "publisher": "Springer"
    }
  ], 
  "acquisition_source": {
    "date": "2019-01-09T14:06:18.997296", 
    "source": "Springer", 
    "method": "Springer", 
    "submission_number": "56bbbcbe140f11e99ed802163e01809a"
  }
}
Published on:
02 January 2019
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2019 (2019)
Issue 1
Pages 1-28
DOI:
https://doi.org/10.1007/JHEP01(2019)015
Copyrights:
The Author(s)
Licence:
CC-BY-3.0

Fulltext files: