{"id":"https://openalex.org/W7220468901","doi":"https://doi.org/10.48550/arxiv.2610.03462","title":"Uniform instanton theory for bridge-mediated nonadiabatic tunneling","display_name":"Uniform instanton theory for bridge-mediated nonadiabatic tunneling","publication_year":2026,"publication_date":"2026-10-02","ids":{"openalex":"https://openalex.org/W7220468901","doi":"https://doi.org/10.48550/arxiv.2610.03462"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2610.03462","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.03462","pdf_url":"https://arxiv.org/pdf/2610.03462","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2610.03462","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5050694397","display_name":"Imaad M. Ansari","orcid":"https://orcid.org/0000-0003-3684-6262","observed_orcids":["https://orcid.org/0000-0003-3684-6262"]},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]},{"id":"https://openalex.org/I4405254265","display_name":"Institute of Molecular Physical Science","ror":"https://ror.org/01m0th787","country_code":"CH","type":"facility","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088","https://openalex.org/I4405254265"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Ansari, Imaad M.","raw_affiliation_strings":["Institute of Molecular Physical Sciences , ETH Z\u00fcrich , 8093 Z\u00fcrich , Switzerland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Molecular Physical Sciences , ETH Z\u00fcrich , 8093 Z\u00fcrich , Switzerland","institution_ids":["https://openalex.org/I35440088","https://openalex.org/I4405254265"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048889959","display_name":"George Trenins","orcid":"https://orcid.org/0000-0003-1581-6961","observed_orcids":["https://orcid.org/0000-0003-1581-6961"]},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]},{"id":"https://openalex.org/I4405254265","display_name":"Institute of Molecular Physical Science","ror":"https://ror.org/01m0th787","country_code":"CH","type":"facility","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088","https://openalex.org/I4405254265"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Trenins, George","raw_affiliation_strings":["Institute of Molecular Physical Sciences , ETH Z\u00fcrich , 8093 Z\u00fcrich , Switzerland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Molecular Physical Sciences , ETH Z\u00fcrich , 8093 Z\u00fcrich , Switzerland","institution_ids":["https://openalex.org/I35440088","https://openalex.org/I4405254265"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5037124074","display_name":"Jeremy O. Richardson","orcid":"https://orcid.org/0000-0002-9429-151X","observed_orcids":["https://orcid.org/0000-0002-9429-151X"]},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]},{"id":"https://openalex.org/I4405254265","display_name":"Institute of Molecular Physical Science","ror":"https://ror.org/01m0th787","country_code":"CH","type":"facility","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088","https://openalex.org/I4405254265"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Richardson, Jeremy O.","raw_affiliation_strings":["Institute of Molecular Physical Sciences , ETH Z\u00fcrich , 8093 Z\u00fcrich , Switzerland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Molecular Physical Sciences , ETH Z\u00fcrich , 8093 Z\u00fcrich , Switzerland","institution_ids":["https://openalex.org/I35440088","https://openalex.org/I4405254265"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"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/T11129","display_name":"Photochemistry and Electron Transfer Studies","score":0.34299999475479126,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11129","display_name":"Photochemistry and Electron Transfer Studies","score":0.34299999475479126,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12044","display_name":"Advanced Physical and Chemical Molecular Interactions","score":0.1981000006198883,"subfield":{"id":"https://openalex.org/subfields/1606","display_name":"Physical and Theoretical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11177","display_name":"Spectroscopy and Quantum Chemical Studies","score":0.13699999451637268,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/instanton-theory","display_name":"instanton theory","score":0.8050000071525574},{"id":"https://openalex.org/keywords/nonadiabatic-tunneling","display_name":"nonadiabatic tunneling","score":0.9129999876022339},{"id":"https://openalex.org/keywords/superexchange","display_name":"superexchange","score":0.9800000190734863},{"id":"https://openalex.org/keywords/uniform-asymptotic-approximation","display_name":"uniform asymptotic approximation","score":0.7229999899864197},{"id":"https://openalex.org/keywords/iron-ii-complexes","display_name":"iron(II) complexes","score":0.9739999771118164},{"id":"https://openalex.org/keywords/nuclear-quantum-effects","display_name":"nuclear quantum effects","score":0.5860000252723694}],"concepts":[{"id":"https://openalex.org/C125198404","wikidata":"https://www.wikidata.org/wiki/Q1192916","display_name":"Instanton","level":2,"score":0.9329000115394592},{"id":"https://openalex.org/C535169671","wikidata":"https://www.wikidata.org/wiki/Q17080006","display_name":"Semiclassical physics","level":3,"score":0.8201000094413757},{"id":"https://openalex.org/C120398109","wikidata":"https://www.wikidata.org/wiki/Q175751","display_name":"Quantum tunnelling","level":2,"score":0.7045000195503235},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.5842999815940857},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.579800009727478},{"id":"https://openalex.org/C84551667","wikidata":"https://www.wikidata.org/wiki/Q155640","display_name":"Potential energy","level":2,"score":0.42410001158714294},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.41130000352859497},{"id":"https://openalex.org/C131584629","wikidata":"https://www.wikidata.org/wiki/Q4308705","display_name":"Coupling (piping)","level":2,"score":0.4083000123500824},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.4004000127315521},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.38449999690055847},{"id":"https://openalex.org/C2780242237","wikidata":"https://www.wikidata.org/wiki/Q17155550","display_name":"Surface hopping","level":3,"score":0.382099986076355},{"id":"https://openalex.org/C160172526","wikidata":"https://www.wikidata.org/wiki/Q2607202","display_name":"Vibronic coupling","level":3,"score":0.32420000433921814},{"id":"https://openalex.org/C151201525","wikidata":"https://www.wikidata.org/wiki/Q177239","display_name":"Limit (mathematics)","level":2,"score":0.31349998712539673},{"id":"https://openalex.org/C91229774","wikidata":"https://www.wikidata.org/wiki/Q193885","display_name":"Infinitesimal","level":2,"score":0.3131999969482422},{"id":"https://openalex.org/C57476982","wikidata":"https://www.wikidata.org/wiki/Q582857","display_name":"Transition state theory","level":4,"score":0.2996000051498413},{"id":"https://openalex.org/C183276030","wikidata":"https://www.wikidata.org/wiki/Q1193095","display_name":"Coupling constant","level":2,"score":0.28290000557899475},{"id":"https://openalex.org/C100776233","wikidata":"https://www.wikidata.org/wiki/Q2532492","display_name":"Bridge (graph theory)","level":2,"score":0.2818000018596649},{"id":"https://openalex.org/C178803272","wikidata":"https://www.wikidata.org/wiki/Q849940","display_name":"Virtual particle","level":3,"score":0.27790001034736633},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.2662999927997589},{"id":"https://openalex.org/C86025842","wikidata":"https://www.wikidata.org/wiki/Q5358432","display_name":"Electronic structure","level":2,"score":0.26579999923706055},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.2558000087738037},{"id":"https://openalex.org/C125277925","wikidata":"https://www.wikidata.org/wiki/Q2572687","display_name":"Potential energy surface","level":3,"score":0.2542000114917755}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2610.03462","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.03462","pdf_url":"https://arxiv.org/pdf/2610.03462","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2610.03462","doi":"https://doi.org/10.48550/arxiv.2610.03462","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2610.03462","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2610.03462","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2610.03462","pdf_url":"https://arxiv.org/pdf/2610.03462","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G263619972","display_name":"Nonadiabatic effects in chemical reactions","funder_award_id":"207772","funder_id":"https://openalex.org/F4320320924","funder_display_name":"Schweizerischer Nationalfonds zur F\u00f6rderung der Wissenschaftlichen Forschung"}],"funders":[{"id":"https://openalex.org/F4320320924","display_name":"Schweizerischer Nationalfonds zur F\u00f6rderung der Wissenschaftlichen Forschung","ror":"https://ror.org/00yjd3n13"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7220468901.pdf","grobid_xml":"https://content.openalex.org/works/W7220468901.grobid-xml"},"referenced_works_count":3,"referenced_works":["https://openalex.org/W1894383828","https://openalex.org/W2984053033","https://openalex.org/W4223435534"],"related_works":["https://openalex.org/W6966289017","https://openalex.org/W4221048320","https://openalex.org/W4415280759","https://openalex.org/W6947578036","https://openalex.org/W4415181730","https://openalex.org/W4223435534","https://openalex.org/W6891384921","https://openalex.org/W1985965912","https://openalex.org/W4412727672","https://openalex.org/W4416095880"],"abstract_inverted_index":{"Instanton":[0],"theory":[1,72,126,148,176],"provides":[2],"a":[3,11,35,48,52,78,151,161,172,189,202],"semiclassical":[4],"approximation":[5,138],"to":[6,33,58,73,127,150,164,196],"nonadiabatic":[7,39],"rate":[8],"constants":[9],"within":[10],"path-integral":[12],"framework":[13],"and":[14,22,45,143,180,185],"captures":[15],"nuclear":[16],"quantum":[17],"effects":[18],"such":[19,75],"as":[20,59],"tunneling":[21,61,80],"zero-point":[23],"energy.":[24,106],"Although":[25],"the":[26,87,99,110,113,116,124,135,140,146,165,183,194,198],"simplest":[27],"reactions":[28,76],"proceed":[29],"directly":[30],"from":[31],"reactants":[32],"products,":[34],"number":[36],"of":[37,86,205],"important":[38],"processes":[40],"involve":[41],"three":[42,88],"electronic":[43],"states":[44],"react":[46],"via":[47],"concerted":[49],"mechanism":[50],"through":[51],"virtual":[53,166],"bridge":[54,100,117,167],"state,":[55],"also":[56],"referred":[57],"bridge-mediated":[60],"or":[62],"superexchange.":[63],"In":[64,107,130,188],"previous":[65,125],"work,":[66,132],"we":[67,133,192],"have":[68],"derived":[69],"an":[70,156,206],"instanton":[71,154,175],"describe":[74],"using":[77],"dominant":[79],"trajectory":[81],"that":[82,145,159,177],"propagates":[83],"on":[84,115],"each":[85],"potential":[89],"energy":[90],"surfaces.":[91],"However,":[92],"this":[93,131],"approach":[94],"is":[95,102],"only":[96],"valid":[97],"when":[98],"state":[101],"sufficiently":[103],"low":[104],"in":[105,109],"contrast,":[108],"high-bridge":[111,141],"regime,":[112],"trajectories":[114],"surface":[118],"become":[119],"infinitesimally":[120],"short,":[121],"which":[122],"causes":[123],"break":[128],"down.":[129],"derive":[134],"appropriate":[136],"asymptotic":[137,174],"for":[139],"regime":[142],"find":[144],"resulting":[147],"reduces":[149],"two-state":[152],"golden-rule":[153],"with":[155],"effective":[157],"coupling":[158],"describes":[160],"nonresonant":[162],"hop":[163],"state.":[168],"We":[169],"further":[170],"develop":[171],"uniform":[173],"eliminates":[178],"divergences":[179],"smoothly":[181],"connects":[182],"high-":[184],"low-bridge":[186],"regimes.":[187],"companion":[190],"paper,":[191],"apply":[193],"method":[195],"study":[197],"quintet-to-singlet":[199],"transition":[200],"(via":[201],"triplet":[203],"bridge)":[204],"iron(II)":[207],"complex.":[208]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-10-06T00:00:00"}