{"department":[{"_id":"RoSe"}],"publication":"Physical Review B","_id":"21270","arxiv":1,"oa":1,"volume":112,"date_created":"2026-02-17T07:56:20Z","acknowledgement":"We are grateful to Dmytro Kolisnyk for his help in working out the spectrum of the Hessian. This work was supported by the Marsden Fund of New Zealand (Contract No. MAU2007) from government funding administered by the Royal Society Te Apārangi and by a summer scholarship from Te Whai Ao – Dodd-Walls Centre for Photonic and Quantum Technologies and the Physics Department, University of Auckland. We acknowledge support by the New Zealand eScience Infrastructure (NeSI) high-performance computing facilities in the form of a merit project allocation.","OA_type":"green","abstract":[{"lang":"eng","text":"The one-dimensional Fröhlich model describing the motion of a single electron interacting with optical phonons is a paradigmatic model of quantum many-body physics. We predict the existence of an arbitrarily large number of bound excited states in the strong-coupling limit and calculate their excitation energies. Numerical simulations of a discretized model demonstrate the complete amelioration of the projector Monte Carlo sign problem by walker annihilation in an infinite Hilbert space. They reveal the threshold for the occurrence of the first bound excited states at a value of 𝛼≈1.73 for the dimensionless coupling constant. This puts the threshold into the regime of intermediate interaction strength. We find a significant spectral weight and increased phonon number of the bound excited state at threshold."}],"status":"public","quality_controlled":"1","article_type":"original","external_id":{"arxiv":["2506.02440 "]},"month":"11","article_number":"184312","citation":{"apa":"Taylor, J., Čufar, M., Mitrouskas, D. J., Seiringer, R., Pahl, E., &#38; Brand, J. (2025). Bound excited states of Fröhlich polarons in one dimension. <i>Physical Review B</i>. American Physical Society. <a href=\"https://doi.org/10.1103/s9p9-jflq\">https://doi.org/10.1103/s9p9-jflq</a>","ieee":"J. Taylor, M. Čufar, D. J. Mitrouskas, R. Seiringer, E. Pahl, and J. Brand, “Bound excited states of Fröhlich polarons in one dimension,” <i>Physical Review B</i>, vol. 112, no. 18. American Physical Society, 2025.","ama":"Taylor J, Čufar M, Mitrouskas DJ, Seiringer R, Pahl E, Brand J. Bound excited states of Fröhlich polarons in one dimension. <i>Physical Review B</i>. 2025;112(18). doi:<a href=\"https://doi.org/10.1103/s9p9-jflq\">10.1103/s9p9-jflq</a>","short":"J. Taylor, M. Čufar, D.J. Mitrouskas, R. Seiringer, E. Pahl, J. Brand, Physical Review B 112 (2025).","mla":"Taylor, J., et al. “Bound Excited States of Fröhlich Polarons in One Dimension.” <i>Physical Review B</i>, vol. 112, no. 18, 184312, American Physical Society, 2025, doi:<a href=\"https://doi.org/10.1103/s9p9-jflq\">10.1103/s9p9-jflq</a>.","ista":"Taylor J, Čufar M, Mitrouskas DJ, Seiringer R, Pahl E, Brand J. 2025. Bound excited states of Fröhlich polarons in one dimension. Physical Review B. 112(18), 184312.","chicago":"Taylor, J., M. Čufar, David Johannes Mitrouskas, Robert Seiringer, E. Pahl, and J. Brand. “Bound Excited States of Fröhlich Polarons in One Dimension.” <i>Physical Review B</i>. American Physical Society, 2025. <a href=\"https://doi.org/10.1103/s9p9-jflq\">https://doi.org/10.1103/s9p9-jflq</a>."},"date_updated":"2026-02-18T08:23:59Z","scopus_import":"1","language":[{"iso":"eng"}],"OA_place":"repository","main_file_link":[{"url":"https://doi.org/10.48550/arXiv.2506.02440 ","open_access":"1"}],"type":"journal_article","publication_status":"published","author":[{"last_name":"Taylor","full_name":"Taylor, J.","first_name":"J."},{"full_name":"Čufar, M.","first_name":"M.","last_name":"Čufar"},{"full_name":"Mitrouskas, David Johannes","first_name":"David Johannes","id":"cbddacee-2b11-11eb-a02e-a2e14d04e52d","last_name":"Mitrouskas"},{"full_name":"Seiringer, Robert","orcid":"0000-0002-6781-0521","first_name":"Robert","id":"4AFD0470-F248-11E8-B48F-1D18A9856A87","last_name":"Seiringer"},{"last_name":"Pahl","full_name":"Pahl, E.","first_name":"E."},{"last_name":"Brand","full_name":"Brand, J.","first_name":"J."}],"year":"2025","intvolume":"       112","doi":"10.1103/s9p9-jflq","publisher":"American Physical Society","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa_version":"Preprint","day":"18","date_published":"2025-11-18T00:00:00Z","issue":"18","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"article_processing_charge":"No","title":"Bound excited states of Fröhlich polarons in one dimension"}