1441 KB0 KB201420262025Šteharnik, Martinletnik:12številka:29 str.ISSN:2385-8567COBISSID_HOST:250877187URN:URN:NBN:SI:doc-SUHT578GenZaložba Fakultete za matematiko in fiziko Univerze v LjubljaniMatrikaeigenstate thermalization hypothesisergodicityergodičnosthipoteza o termalizaciji lastnih stanjkvantni kaosquantum chaosBreaking of quantum ergodicity and scars|In this article quantum chaos is introduced, with special attention to the concept of ergodicity, and compared to classical counterparts. The eigenstate thermalization hypothesis, a statement of ergodicity in quantum mechanics, is discussed. Methods of breaking ergodicity by way of violating the hypothesis are discussed. These are separated into strong breaking, including integrability and many-body localization, and weak breaking, notably including many-body scars and related effectsV članku je uveden kvantni kaos ter primerjan s klasičnim, s poudarkom na pojmu ergodičnosti. Hipoteza o termalizaciji lastnih stanj (ang. eigenstate thermalization hypothesis), ki deluje kot ustreznica ergodičnosti v kvantni mehaniki, je predstavljena. Sledi razprava o nekaterih načinih zloma ergodičnosti preko zloma omenjene hipoteze. Ti so ločeni na močan zlom, ki ga povzročita integrabilnost in mnogodelčna lokalizacija (ang. many-body localization), in šibak zlom, ki ga povzročijo mnogodelčne kvantne brazgotine (ang. many-body quantum scars) ter sorodni učinkiTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za matematiko in fiziko