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In this work, we explore a recently introduced localization measure that quantifies the portion of the classical phase space occupied by a quantum state. The measure is based on the <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mi>&amp;#x03B1;<\/mml:mi><\/mml:math>-moments of the Husimi function and is known as the R\u00e9nyi occupation of order <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mi>&amp;#x03B1;<\/mml:mi><\/mml:math>. With this quantity and random pure states, we find a general expression to identify states that are maximally delocalized in phase space. Using this expression and the Dicke model, which is an interacting spin-boson model with an unbounded four-dimensional phase space, we show that the R\u00e9nyi occupations with <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mi>&amp;#x03B1;<\/mml:mi><mml:mo>&amp;#x003E;<\/mml:mo><mml:mn>1<\/mml:mn><\/mml:math> are highly effective at revealing quantum scars. Furthermore, by analyzing the high moments (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><mml:mi>&amp;#x03B1;<\/mml:mi><mml:mo>&amp;#x003E;<\/mml:mo><mml:mn>1<\/mml:mn><\/mml:math>) of the Husimi function, we are able to identify qualitatively and quantitatively the unstable periodic orbits that scar some of the eigenstates of the model.<\/jats:p>","DOI":"10.22331\/q-2022-02-08-644","type":"journal-article","created":{"date-parts":[[2022,2,13]],"date-time":"2022-02-13T15:08:45Z","timestamp":1644764925000},"page":"644","update-policy":"http:\/\/dx.doi.org\/10.22331\/q-crossmark-policy-page","source":"Crossref","is-referenced-by-count":10,"title":["Identification of quantum scars via phase-space localization measures"],"prefix":"10.22331","volume":"6","author":[{"given":"Sa\u00fal","family":"Pilatowsky-Cameo","sequence":"first","affiliation":[{"name":"Instituto de Ciencias Nucleares, Universidad Nacional Aut\u00f3noma de M\u00e9xico, Apdo. 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