Spectral properties of bottomonium at high temperature: a systematic investigation
We investigate spectral features of bottomonium at high temperature, in particular the thermal mass shift and width of ground state S-wave and P-wave state. We employ and compare a range of methods for determining these features from lattice NRQCD correlators, including direct correlator analyses (multi-exponential fits and moments of spectral functions), linear methods (Backus-Gilbert, Tikhonov and HLT methods), and Bayesian methods for spectral function reconstruction (MEM and BR). We comment on the reliability and limitations of the various methods.
Authors
- Maria Paola Lombardo (ORCID: https://orcid.org/0000-0002-3524-3390)
- Chris Allton (ORCID: https://orcid.org/0000-0003-0795-124X)
- Gert Aarts (ORCID: https://orcid.org/0000-0002-6038-3782)
- Ryan Bignell (ORCID: https://orcid.org/0000-0001-8401-1345)
- Jon-Ivar Skullerud (ORCID: https://orcid.org/0000-0002-8255-0043)
- Sinéad M. Ryan (ORCID: https://orcid.org/0000-0003-0811-7038)
- Rachel Horohan D'arcy (ORCID: https://orcid.org/0000-0002-7084-9531)
- Antonio Smecca (ORCID: https://orcid.org/0000-0002-8887-5826)
- Timothy J. Burns (ORCID: https://orcid.org/0000-0002-7201-6437)
- Seyong Kim (ORCID: https://orcid.org/0000-0002-8522-4104)
- Ben Page (ORCID: https://orcid.org/0000-0001-8222-8372)
- Benjamin Jäger (ORCID: https://orcid.org/0000-0003-2930-609X)
- M. Naeem Anwar
- Tom Spriggs
Publication Details
- Published
- 2025-10-24
- DOI
- https://doi.org/10.22323/1.483.0160
- Primary Topic
- Photorefractive and Nonlinear Optics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- UK Research and Innovation
- University of Leicester
- Partnership for Advanced Computing in Europe AISBL
- Syddansk Universitet
- Science and Technology Facilities Council
- European Regional Development Fund