Buividovich, PV 
ORCID: 0000-0002-9468-898X, Smith, D and von Smekal, L
(2021)
Static magnetic susceptibility in finite-density <i>SU</i> (2) lattice gauge theory.
EUROPEAN PHYSICAL JOURNAL A, 57 (10).
293-.
Abstract
We study static magnetic susceptibility $\chi(T, \mu)$ in $SU(2)$ lattice gauge theory with $N_f = 2$ light flavours of dynamical fermions at finite chemical potential $\mu$. Using linear response theory we find that $SU(2)$ gauge theory exhibits paramagnetic behavior in both the high-temperature deconfined regime and the low-temperature confining regime. Paramagnetic response becomes stronger at higher temperatures and larger values of the chemical potential. For our range of temperatures $0.727 \leq T/T_c \leq 2.67$, the first coefficient of the expansion of $\chi(T, \mu)$ in even powers of $\mu/T$ around $\mu=0$ is close to that of free quarks and lies in the range $(2 \ldots 5) \cdot 10^{-3}$. The strongest paramagnetic response is found in the diquark condensation phase at $\mu > m_{\pi}/2$.
| Item Type: | Article |
|---|---|
| Additional Information: | Contribution to the EPJA topical issue "QCD Phase Diagram in Strong Magnetic Fields", 7 pages EPJA style, 4 figures; v2: published version |
| Uncontrolled Keywords: | hep-lat, hep-lat, hep-ph, hep-th |
| Divisions: | Faculty of Science and Engineering > School of Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 02 Nov 2021 11:14 |
| Last Modified: | 19 Oct 2023 09:06 |
| DOI: | 10.1140/epja/s10050-021-00604-7 |
| Open Access URL: | http://doi.org/10.1140/epja/s10050-021-00604-7 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3142492 |
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