{"id":"https://openalex.org/W7132121237","doi":null,"title":"Nonlocal collective electronic fluctuations: From model systems to realistic materials","display_name":"Nonlocal collective electronic fluctuations: From model systems to realistic materials","publication_year":2023,"publication_date":"2023-05-04","ids":{"openalex":"https://openalex.org/W7132121237"},"language":"en","primary_location":{"id":"pmh:oai:xfel.tind.io:3161","doi":null,"is_oa":true,"landing_page_url":"https://ediss.sub.uni-hamburg.de/handle/ediss/9964","pdf_url":"https://ediss.sub.uni-hamburg.de/bitstream/ediss/9964/1/Harkov_thesis.pdf","source":{"id":"https://openalex.org/S7407053418","display_name":"European XFEL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I910829146","host_organization_name":"European X-Ray Free-Electron Laser","host_organization_lineage":["https://openalex.org/I910829146"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://xfel.tind.io/record/3161","raw_type":"Text"},"volume":null,"type":"article","indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://ediss.sub.uni-hamburg.de/bitstream/ediss/9964/1/Harkov_thesis.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5047453126","display_name":"Viktor Harkov","orcid":"https://orcid.org/0000-0001-8217-9531","observed_orcids":["https://orcid.org/0000-0001-8217-9531"]},"institutions":[{"id":"https://openalex.org/I159176309","display_name":"Universit\u00e4t Hamburg","ror":"https://ror.org/00g30e956","country_code":"DE","type":"education","lineage":["https://openalex.org/I159176309"]},{"id":"https://openalex.org/I910829146","display_name":"European X-Ray Free-Electron Laser","ror":"https://ror.org/01wp2jz98","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1305996414","https://openalex.org/I160013858","https://openalex.org/I2738703131","https://openalex.org/I2800235667","https://openalex.org/I2801876189","https://openalex.org/I2802499594","https://openalex.org/I4210087105","https://openalex.org/I4210097150","https://openalex.org/I4210124562","https://openalex.org/I4210132216","https://openalex.org/I4210140065","https://openalex.org/I4210142071","https://openalex.org/I4210155236","https://openalex.org/I4387152914","https://openalex.org/I4388482678","https://openalex.org/I910829146"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Harkov, Viktor","raw_affiliation_strings":["European X-Ray Free-Electron Laser Facility , Holzkoppel 4 , 22869 Schenefeld , Germany","I. Institute of Theoretical Physics , University of Hamburg , Notkestra\u00dfe 9 , 22607 Hamburg , Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"European X-Ray Free-Electron Laser Facility , Holzkoppel 4 , 22869 Schenefeld , Germany","institution_ids":["https://openalex.org/I910829146"]},{"raw_affiliation_string":"I. Institute of Theoretical Physics , University of Hamburg , Notkestra\u00dfe 9 , 22607 Hamburg , Germany","institution_ids":["https://openalex.org/I159176309"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5047453126"],"corresponding_institution_ids":["https://openalex.org/I159176309","https://openalex.org/I910829146"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.2054657,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10037","display_name":"Physics of Superconductivity and Magnetism","score":0.9535999894142151,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10037","display_name":"Physics of Superconductivity and Magnetism","score":0.9535999894142151,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11804","display_name":"Quantum many-body systems","score":0.02930000051856041,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11682","display_name":"Advanced Condensed Matter Physics","score":0.006599999964237213,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/strongly-correlated-fermions","display_name":"strongly correlated fermions","score":0.8489999771118164},{"id":"https://openalex.org/keywords/self-energy","display_name":"self-energy","score":0.6460000276565552},{"id":"https://openalex.org/keywords/hubbard-model","display_name":"Hubbard model","score":0.6480000019073486},{"id":"https://openalex.org/keywords/charge-density-wave","display_name":"charge density wave","score":0.9490000009536743},{"id":"https://openalex.org/keywords/ferromagnetism","display_name":"ferromagnetism","score":0.8930000066757202},{"id":"https://openalex.org/keywords/long-range-coulomb-interaction","display_name":"long-range Coulomb interaction","score":0.7910000085830688},{"id":"https://openalex.org/keywords/nonlocal-correlations","display_name":"nonlocal correlations","score":0.5590000152587891},{"id":"https://openalex.org/keywords/multi-orbital-systems","display_name":"multi-orbital systems","score":0.6010000109672546}],"concepts":[{"id":"https://openalex.org/C106624574","wikidata":"https://www.wikidata.org/wiki/Q5270387","display_name":"Diagrammatic reasoning","level":2,"score":0.7621999979019165},{"id":"https://openalex.org/C2777922955","wikidata":"https://www.wikidata.org/wiki/Q4947448","display_name":"Bosonization","level":3,"score":0.6808000206947327},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.5778999924659729},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.4977000057697296},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.49149999022483826},{"id":"https://openalex.org/C2781204021","wikidata":"https://www.wikidata.org/wiki/Q6497091","display_name":"Lattice (music)","level":2,"score":0.47429999709129333},{"id":"https://openalex.org/C2780522230","wikidata":"https://www.wikidata.org/wiki/Q1140419","display_name":"Ambiguity","level":2,"score":0.42739999294281006},{"id":"https://openalex.org/C191399111","wikidata":"https://www.wikidata.org/wiki/Q64861","display_name":"Transitive relation","level":2,"score":0.414900004863739},{"id":"https://openalex.org/C207821765","wikidata":"https://www.wikidata.org/wiki/Q405372","display_name":"Instability","level":2,"score":0.40209999680519104},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.4018000066280365},{"id":"https://openalex.org/C106074065","wikidata":"https://www.wikidata.org/wiki/Q1571298","display_name":"Hubbard model","level":3,"score":0.39959999918937683},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3984000086784363},{"id":"https://openalex.org/C151201525","wikidata":"https://www.wikidata.org/wiki/Q177239","display_name":"Limit (mathematics)","level":2,"score":0.3970000147819519},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.390500009059906},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.3776000142097473},{"id":"https://openalex.org/C208081375","wikidata":"https://www.wikidata.org/wiki/Q274502","display_name":"Degrees of freedom (physics and chemistry)","level":2,"score":0.37630000710487366},{"id":"https://openalex.org/C80899671","wikidata":"https://www.wikidata.org/wiki/Q1304193","display_name":"Vertex (graph theory)","level":3,"score":0.3727000057697296},{"id":"https://openalex.org/C2778023678","wikidata":"https://www.wikidata.org/wiki/Q554403","display_name":"Duality (order theory)","level":2,"score":0.31869998574256897},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.3028999865055084},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.2955000102519989},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.2761000096797943},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.27459999918937683},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.274399995803833},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.27149999141693115},{"id":"https://openalex.org/C48753275","wikidata":"https://www.wikidata.org/wiki/Q11216","display_name":"Numerical analysis","level":2,"score":0.2685999870300293},{"id":"https://openalex.org/C47822265","wikidata":"https://www.wikidata.org/wiki/Q854457","display_name":"Complex system","level":2,"score":0.26420000195503235},{"id":"https://openalex.org/C148220186","wikidata":"https://www.wikidata.org/wiki/Q7111912","display_name":"Outcome (game theory)","level":2,"score":0.2623000144958496},{"id":"https://openalex.org/C69523127","wikidata":"https://www.wikidata.org/wiki/Q4480008","display_name":"Ground state","level":2,"score":0.25060001015663147}],"mesh":[],"locations_count":1,"locations":[{"id":"pmh:oai:xfel.tind.io:3161","doi":null,"is_oa":true,"landing_page_url":"https://ediss.sub.uni-hamburg.de/handle/ediss/9964","pdf_url":"https://ediss.sub.uni-hamburg.de/bitstream/ediss/9964/1/Harkov_thesis.pdf","source":{"id":"https://openalex.org/S7407053418","display_name":"European XFEL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I910829146","host_organization_name":"European X-Ray Free-Electron Laser","host_organization_lineage":["https://openalex.org/I910829146"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://xfel.tind.io/record/3161","raw_type":"Text"}],"best_oa_location":{"id":"pmh:oai:xfel.tind.io:3161","doi":null,"is_oa":true,"landing_page_url":"https://ediss.sub.uni-hamburg.de/handle/ediss/9964","pdf_url":"https://ediss.sub.uni-hamburg.de/bitstream/ediss/9964/1/Harkov_thesis.pdf","source":{"id":"https://openalex.org/S7407053418","display_name":"European XFEL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I910829146","host_organization_name":"European X-Ray Free-Electron Laser","host_organization_lineage":["https://openalex.org/I910829146"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://xfel.tind.io/record/3161","raw_type":"Text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G1230266125","display_name":null,"funder_award_id":"EXC\u20102056","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"},{"id":"https://openalex.org/G3328784144","display_name":"EXC 2056: CUI: Advanced Imaging of Matter","funder_award_id":"390715994","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"},{"id":"https://openalex.org/G4675369358","display_name":null,"funder_award_id":"390715994","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G5411079680","display_name":null,"funder_award_id":"ERC-2015-AdG","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"},{"id":"https://openalex.org/G5631081224","display_name":null,"funder_award_id":"ID 39 071 5994","funder_id":"https://openalex.org/F4320320879","funder_display_name":"Deutsche Forschungsgemeinschaft"},{"id":"https://openalex.org/G7578108311","display_name":null,"funder_award_id":"694097","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320319356","display_name":"Flatiron Health","ror":"https://ror.org/0508h6p74"},{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320320879","display_name":"Deutsche Forschungsgemeinschaft","ror":"https://ror.org/018mejw64"},{"id":"https://openalex.org/F4320321181","display_name":"Austrian Science Fund","ror":"https://ror.org/013tf3c58"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7132121237.pdf","grobid_xml":"https://content.openalex.org/works/W7132121237.grobid-xml"},"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W3112977323","https://openalex.org/W4223904206","https://openalex.org/W4416062055","https://openalex.org/W1977540999","https://openalex.org/W2265795780","https://openalex.org/W2624955417","https://openalex.org/W1897127383","https://openalex.org/W4417448635","https://openalex.org/W3201834882","https://openalex.org/W7010638683"],"abstract_inverted_index":{"The":[0,496],"main":[1,161],"focus":[2],"of":[3,13,48,64,73,81,87,119,134,144,163,174,201,223,235,256,263,310,331,358,367,447,454,461,472,492,525,536],"the":[4,9,45,65,74,78,95,117,120,130,135,139,142,145,150,160,166,182,207,219,224,238,249,261,264,269,277,292,298,307,332,345,363,368,374,383,395,401,412,426,431,438,444,455,462,470,479,482,489,493,503,516,523,534,537],"present":[5],"thesis":[6],"lies":[7],"on":[8,17,61,105,232],"development":[10],"and":[11,34,171,203,237,350,378,417,422,466,527],"application":[12],"numerical":[14],"approaches":[15],"based":[16,60,104],"quantum":[18,387],"lattice":[19],"models":[20],"to":[21,109,138,153,181,271,291,382,478,501],"describe":[22],"collective":[23,66,88,273],"excitations":[24,89],"in":[25,51,77,90,102,245,252,276,437,459,469,522],"strongly":[26,52],"correlated":[27,53],"materials.":[28],"To":[29],"this":[30,164,315,359,448],"end,":[31],"an":[32,329],"efficient":[33],"balanced":[35],"dual":[36,335],"triply":[37],"irreducible":[38],"local":[39,342,456,541],"expansion":[40],"(D-TRILEX)":[41],"approach":[42,168,266,481],"that":[43,212,214,289,394,435,515],"captures":[44,399],"major":[46],"effects":[47,275],"spatial":[49],"correlations":[50,343,352],"fermionic":[54],"systems":[55],"is":[56,59,169,176,499],"presented,":[57],"which":[58,99,197,339],"partial":[62,106],"bosonization":[63],"electronic":[67,233,274],"fluctuations.":[68],"Thereby,":[69,286,530],"a":[70,84,188,229,253,282,301,320,355,408,452,519],"specific":[71],"choice":[72],"bare":[75],"interaction":[76,297,508],"corresponding":[79],"channel":[80],"instability":[82],"allows":[83],"simultaneous":[85],"description":[86],"different":[91,199,204,402,507,511],"channels":[92],"without":[93],"facing":[94],"Fierz":[96],"ambiguity":[97],"problem":[98],"usually":[100],"arises":[101],"methods":[103],"bosonization.":[107],"Compared":[108],"more":[110,154,333],"elaborate":[111,334],"methods,":[112,196],"D-TRILEX":[113,167,194,246,265,324,480],"does":[114],"not":[115,216],"require":[116],"computation":[118],"numerically":[121,384],"expensive":[122],"four-point":[123,208,225,457,494],"vertex.":[124,495],"Furthermore,":[125],"taking":[126,242],"into":[127,243],"account":[128,244],"only":[129,228],"leading":[131,250],"longitudinal":[132,239],"contribution":[133],"bosonic":[136,240],"modes":[137,241],"self-energy":[140,247],"reduces":[141],"complexity":[143],"diagrammatic":[146,190,386],"structure":[147],"drastically":[148],"making":[149],"method":[151,270,397],"applicable":[152],"complex":[155],"realistic":[156,283],"multi-orbital":[157],"systems.":[158],"As":[159,354,443],"result":[162,357,446],"thesis,":[165,360,449],"introduced":[170],"its":[172],"limit":[173],"applicability":[175,262],"studied":[177],"by":[178,192,218,487],"applying":[179],"it":[180],"two-dimensional":[183,369],"single-band":[184,370],"Hubbard":[185,371],"model.":[186,285],"Performing":[187],"comprehensive":[189],"analysis":[191],"comparing":[193],"with":[195,411],"consider":[198],"sets":[200],"diagrams":[202],"approximations":[205],"for":[206,306,341,415,506,540],"vertex,":[209],"we":[210,267,287,317,361,450],"find":[211,288,393,514],"contributions":[213],"are":[215,248,485],"considered":[217,311,327],"partially":[220],"bosonized":[221],"approximation":[222,330,377,428,517],"vertex":[226,458,465,498,539,542],"have":[227,318],"minor":[230],"effect":[231],"degrees":[234],"freedom":[236],"ones":[251],"broad":[254,308],"range":[255,309],"control":[257],"parameters.":[258],"After":[259],"investigating":[260],"apply":[268],"study":[272,532],"hole-doped":[278],"InSe":[279],"monolayers":[280],"using":[281],"electronic-structure":[284],"due":[290],"weakly":[293],"screened":[294,467],"long-range":[295],"Coulomb":[296],"system":[299,439],"shows":[300,407,518],"charge":[302],"density":[303],"waves":[304],"phase":[305],"parameters,":[312],"however,":[313],"inside":[314],"regime":[316,366],"found":[319],"coexisting":[321],"ferromagnetic":[322],"phase.":[323],"can":[325],"be":[326],"as":[328],"boson":[336],"(DB)":[337],"theory,":[338],"accounts":[340],"within":[344,373],"dynamical":[346],"mean-field":[347],"theory":[348],"(DMFT)":[349],"nonlocal":[351],"perturbatively.":[353],"further":[356],"investigate":[362],"weak":[364,526],"coupling":[365],"model":[372],"ladder":[375,427],"DB":[376,396,406],"compare":[379],"our":[380,531],"results":[381,414],"exact":[385,413],"Monte":[388],"Carlo":[389],"(DiagMC)":[390],"method.":[391],"We":[392,513],"qualitatively":[398],"all":[400],"regimes.":[403],"Even":[404],"quantitatively":[405],"good":[409,520],"agreement":[410,521],"single-":[416],"two-particle":[418],"quantities":[419],"at":[420,440,510],"high":[421],"moderate":[423],"temperatures.":[424,442,512],"However,":[425],"slightly":[429],"underestimates":[430],"strong":[432,528],"antiferromagnetic":[433],"fluctuations":[434],"appear":[436],"low":[441],"final":[445],"perform":[451],"parametrization":[453],"terms":[460],"(three-point)":[463],"Hedin":[464,538],"interactions":[468],"framework":[471],"single-boson":[473],"exchange":[474],"(SBE)":[475],"decomposition.":[476],"Similar":[477],"computational":[483],"costs":[484],"reduced":[486],"neglecting":[488],"interaction-irreducible":[490],"part":[491],"approximated":[497],"used":[500],"calculate":[502],"DMFT":[504],"susceptibility":[505],"strengths":[509],"limits":[524],"couplings.":[529],"highlights":[533],"importance":[535],"corrections.":[543]},"counts_by_year":[],"updated_date":"2026-08-26T07:47:46.906454","created_date":"2026-02-28T00:00:00"}