2024/11/25 by Andreas Athenodorou, Sergei Dubovsky, Athenodorou, Andreas +5
Computer Science · Engineering · Environmental Science · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Methane Hydrates and Related Phenomena #Superconducting Materials and Applications
paper · pdf · doi:10.48550/arxiv.2411.16507
openalex publication_date 2024/11/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The quest to develop an effective string theory capable of describing the confining flux tube has been a longstanding objective within the theoretical physics community. Recent lattice results indicate that the low-lying spectrum of the flux tube in both three and four dimensions can be partially described by the Nambu-Goto string with minor deviations. However, several excitation states exhibit significant corrections that have remained unexplained until recently. Recent advancements suggest that a Thermodynamic Bethe Ansatz (TBA) analysis, expanded in both 1/R √σ and the softness of phonons i.e. p/√σ, can lead to a robust effective string theory for the flux-tube with length R. Furthermore, lattice data points to the existence of an axion field on the world-sheet of the flux-tube, implying that an Axionic String Ansatz (ASA) should accompany the Nambu-Goto framework. We will provide compelling evidence in these proceedings that this approach can closely approximate the flux tube data. We will demonstrate this by comparing results obtained for the spectrum of the closed SU(Nc) flux-tube extracted using lattice techniques in four dimensions.