The Abelian Higgs model under a gauge invariant looking glass: exploiting new Ward identities for gauge invariant operators and the Equivalence Theorem

D. Dudal (Department of Physics, KU Leuven Campus Kortrijk — Kulak, Etienne Sabbelaan 53 bus 7657, Kortrijk, 8500, Belgium; Department of Physics and Astronomy, Ghent University, Krijgslaan 281-S9, Gent, 9000, Belgium) ; G. Peruzzo (Instituto de Física — Departamento de Física Teórica, UERJ — Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, 20550-013, Brasil) ; S. Sorella (Instituto de Física — Departamento de Física Teórica, UERJ — Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, 20550-013, Brasil)

The content of two additional Ward identities exhibited by the U(1) Higgs model is exploited. These novel Ward identities can be derived only when a pair of local composite operators providing a gauge invariant setup for the Higgs particle and the massive vector boson is introduced in the theory from the beginning. Among the results obtained from the above mentioned Ward identities, we underline a new exact relationship between the stationary condition for the vacuum energy, the vanishing of the tadpoles and the vacuum expectation value of the gauge invariant scalar operator. We also present a characterization of the two-point correlation function of the composite operator corresponding to the vector boson in terms of the two-point function of the elementary gauge fields. Finally, a discussion on the connection between the cartesian and the polar parametrization of the complex scalar field is presented in the light of the Equivalence Theorem. The latter can in the current case be understood in the language of a constrained cohomology, which also allows to rewrite the action in terms of the aforementioned gauge invariant operators. We also comment on the diminished role of the global U(1) symmetry and its breaking.

{
  "_oai": {
    "updated": "2022-01-24T00:35:10Z", 
    "id": "oai:repo.scoap3.org:65137", 
    "sets": [
      "JHEP"
    ]
  }, 
  "authors": [
    {
      "affiliations": [
        {
          "country": "Belgium", 
          "value": "Department of Physics, KU Leuven Campus Kortrijk \u2014 Kulak, Etienne Sabbelaan 53 bus 7657, Kortrijk, 8500, Belgium", 
          "organization": "Department of Physics, KU Leuven Campus Kortrijk \u2014 Kulak"
        }, 
        {
          "country": "Belgium", 
          "value": "Department of Physics and Astronomy, Ghent University, Krijgslaan 281-S9, Gent, 9000, Belgium", 
          "organization": "Ghent University"
        }
      ], 
      "surname": "Dudal", 
      "email": "david.dudal@kuleuven.be", 
      "full_name": "Dudal, D.", 
      "given_names": "D."
    }, 
    {
      "affiliations": [
        {
          "country": "Brazil", 
          "value": "Instituto de F\u00edsica \u2014 Departamento de F\u00edsica Te\u00f3rica, UERJ \u2014 Universidade do Estado do Rio de Janeiro, Rua S\u00e3o Francisco Xavier 524, Maracan\u00e3, Rio de Janeiro, 20550-013, Brasil", 
          "organization": "UERJ \u2014 Universidade do Estado do Rio de Janeiro"
        }
      ], 
      "surname": "Peruzzo", 
      "email": "gperuzzofisica@gmail.com", 
      "full_name": "Peruzzo, G.", 
      "given_names": "G."
    }, 
    {
      "affiliations": [
        {
          "country": "Brazil", 
          "value": "Instituto de F\u00edsica \u2014 Departamento de F\u00edsica Te\u00f3rica, UERJ \u2014 Universidade do Estado do Rio de Janeiro, Rua S\u00e3o Francisco Xavier 524, Maracan\u00e3, Rio de Janeiro, 20550-013, Brasil", 
          "organization": "UERJ \u2014 Universidade do Estado do Rio de Janeiro"
        }
      ], 
      "surname": "Sorella", 
      "email": "silvio.sorella@gmail.com", 
      "full_name": "Sorella, S.", 
      "given_names": "S."
    }
  ], 
  "titles": [
    {
      "source": "Springer", 
      "title": "The Abelian Higgs model under a gauge invariant looking glass: exploiting new Ward identities for gauge invariant operators and the Equivalence Theorem"
    }
  ], 
  "dois": [
    {
      "value": "10.1007/JHEP10(2021)039"
    }
  ], 
  "publication_info": [
    {
      "page_end": "40", 
      "journal_title": "Journal of High Energy Physics", 
      "material": "article", 
      "journal_volume": "2021", 
      "artid": "JHEP10(2021)039", 
      "year": 2021, 
      "page_start": "1", 
      "journal_issue": "10"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2022-01-24T00:34:18.208215", 
    "source": "Springer", 
    "method": "Springer", 
    "submission_number": "c3b70ed27cac11ec9421ee5ceb395428"
  }, 
  "page_nr": [
    40
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "holder": "The Author(s)", 
      "year": "2021"
    }
  ], 
  "control_number": "65137", 
  "record_creation_date": "2021-10-06T06:30:29.560513", 
  "_files": [
    {
      "checksum": "md5:95ca65ca697172a72f3cb946c0a59780", 
      "filetype": "xml", 
      "bucket": "db3a3733-168c-4915-a90c-a9311e40e015", 
      "version_id": "36d8b386-23c0-4067-bc44-108847f1f468", 
      "key": "10.1007/JHEP10(2021)039.xml", 
      "size": 12738
    }, 
    {
      "checksum": "md5:284e3ae1abc813aadca26c29105d0419", 
      "filetype": "pdf/a", 
      "bucket": "db3a3733-168c-4915-a90c-a9311e40e015", 
      "version_id": "fe3a7c2a-3339-4371-a385-cf3a5c9d68b0", 
      "key": "10.1007/JHEP10(2021)039_a.pdf", 
      "size": 899172
    }
  ], 
  "collections": [
    {
      "primary": "Journal of High Energy Physics"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-th", 
        "hep-lat", 
        "hep-ph"
      ], 
      "value": "2105.11011"
    }
  ], 
  "abstracts": [
    {
      "source": "Springer", 
      "value": "The content of two additional Ward identities exhibited by the U(1) Higgs model is exploited. These novel Ward identities can be derived only when a pair of local composite operators providing a gauge invariant setup for the Higgs particle and the massive vector boson is introduced in the theory from the beginning. Among the results obtained from the above mentioned Ward identities, we underline a new exact relationship between the stationary condition for the vacuum energy, the vanishing of the tadpoles and the vacuum expectation value of the gauge invariant scalar operator. We also present a characterization of the two-point correlation function of the composite operator corresponding to the vector boson in terms of the two-point function of the elementary gauge fields. Finally, a discussion on the connection between the cartesian and the polar parametrization of the complex scalar field is presented in the light of the Equivalence Theorem. The latter can in the current case be understood in the language of a constrained cohomology, which also allows to rewrite the action in terms of the aforementioned gauge invariant operators. We also comment on the diminished role of the global U(1) symmetry and its breaking."
    }
  ], 
  "imprints": [
    {
      "date": "2021-10-05", 
      "publisher": "Springer"
    }
  ]
}
Published on:
05 October 2021
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2021 (2021)
Issue 10
Pages 1-40
DOI:
https://doi.org/10.1007/JHEP10(2021)039
arXiv:
2105.11011
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: