{
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  "authors": [
    {
      "raw_name": "Riccardo Argurio", 
      "affiliations": [
        {
          "country": "Belgium", 
          "value": "Physique Th\u00e9orique et Math\u00e9matique and International Solvay Institutes, Universit\u00e9 Libre de Bruxelles, C.P. 231, B-1050 Brussels, Belgium"
        }
      ], 
      "surname": "Argurio", 
      "given_names": "Riccardo", 
      "full_name": "Argurio, Riccardo"
    }, 
    {
      "raw_name": "Carlos Hoyos", 
      "affiliations": [
        {
          "country": "Spain", 
          "value": "Department of Physics and Instituto de Ciencias y Tecnolog\u00edas Espaciales de Asturias (ICTEA), Universidad de Oviedo, c/ Federico Garc\u00eda Lorca 18, E-33007 Oviedo, Spain"
        }
      ], 
      "surname": "Hoyos", 
      "given_names": "Carlos", 
      "full_name": "Hoyos, Carlos"
    }, 
    {
      "raw_name": "Daniele Musso", 
      "affiliations": [
        {
          "country": "Spain", 
          "value": "Departamento de F\u00edsica de Part\u00edculas and Instituto Galego de F\u00edsica de Altas Enerx\u00edas (IGFAE), Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain Inovalabs Digital S.L. (TECHEYE), E-36202 Vigo, Spain"
        }
      ], 
      "surname": "Musso", 
      "given_names": "Daniele", 
      "full_name": "Musso, Daniele"
    }, 
    {
      "raw_name": "Daniel Naegels", 
      "affiliations": [
        {
          "country": "Belgium", 
          "value": "Physique Th\u00e9orique et Math\u00e9matique and International Solvay Institutes, Universit\u00e9 Libre de Bruxelles, C.P. 231, B-1050 Brussels, Belgium"
        }
      ], 
      "surname": "Naegels", 
      "given_names": "Daniel", 
      "full_name": "Naegels, Daniel"
    }
  ], 
  "titles": [
    {
      "source": "APS", 
      "title": "Gapped dilatons in scale invariant superfluids"
    }
  ], 
  "dois": [
    {
      "value": "10.1103/PhysRevD.102.076011"
    }
  ], 
  "publication_info": [
    {
      "journal_volume": "102", 
      "journal_title": "Physical Review D", 
      "material": "article", 
      "journal_issue": "7", 
      "year": 2020
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
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    "date": "2021-08-25T10:42:44.446469", 
    "source": "APS", 
    "method": "APS", 
    "submission_number": "810b323c058f11ecb53772fd3742099d"
  }, 
  "page_nr": [
    13
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses/by/4.0/", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "statement": "Published by the American Physical Society", 
      "year": "2020"
    }
  ], 
  "control_number": "57607", 
  "record_creation_date": "2020-10-19T18:30:03.708171", 
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      "key": "10.1103/PhysRevD.102.076011.pdf", 
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  ], 
  "collections": [
    {
      "primary": "HEP"
    }, 
    {
      "primary": "Citeable"
    }, 
    {
      "primary": "Published"
    }
  ], 
  "arxiv_eprints": [
    {
      "categories": [
        "hep-th", 
        "cond-mat.quant-gas", 
        "cond-mat.str-el", 
        "hep-ph"
      ], 
      "value": "2006.11047"
    }
  ], 
  "abstracts": [
    {
      "source": "APS", 
      "value": "We study a paradigmatic model in field theory where a global <math><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></math> and scale symmetries are jointly and spontaneously broken. At zero density the model has a noncompact flat direction, which at finite density needs to be slightly lifted. The resulting low-energy spectrum is composed by a standard gapless <math><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></math> Nambu-Goldstone mode and a light dilaton whose gap is determined by the chemical potential and corrected by the couplings. Even though <math><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></math> and scale symmetries commute, there is a mixing between the <math><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></math> Nambu-Goldstone and the dilaton that is crucial to recover the expected dynamics of a conformal fluid and leads to a phonon propagating at the speed of sound. The results rely solely on an accurate study of the Ward-Takahashi identities and are checked against standard fluctuation computations. We extend our results to a boosted superfluid, and comment the relevance of our findings to condensed matter applications."
    }
  ], 
  "imprints": [
    {
      "date": "2020-10-19", 
      "publisher": "APS"
    }
  ]
}