# Finite-density transition line for QCD with 695 MeV dynamical fermions

## Abstract

We apply the relative weights method to SU(3) gauge theory with staggered fermions of mass 695 MeV at a set of temperatures in the range 151 ≤ T ≤ 267 MeV, to obtain an effective Polyakov line action at each temperature.We then apply a mean field method to search for phase transitions in the effective theory at finite densities. The result is a transition line in the plane of temperature and chemical potential, with an end point at high temperature, as expected, but also a second end point at a lower temperature. We cannot rule out the possibilities that a transition line reappears at temperatures lower than the range investigated, or that the second end point is absent for light quarks.

- Authors:

- Publication Date:

- Research Org.:
- San Francisco State Univ., San Francisco, CA (United States)

- Sponsoring Org.:
- USDOE Office of Science (SC)

- OSTI Identifier:
- 1441027

- Alternate Identifier(s):
- OSTI ID: 1503868

- Grant/Contract Number:
- SC0013682

- Resource Type:
- Published Article

- Journal Name:
- Physical Review D

- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 11; Journal ID: ISSN 2470-0010

- Publisher:
- American Physical Society

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

### Citation Formats

```
Greensite, Jeff, and Höllwieser, Roman. Finite-density transition line for QCD with 695 MeV dynamical fermions. United States: N. p., 2018.
Web. doi:10.1103/PhysRevD.97.114504.
```

```
Greensite, Jeff, & Höllwieser, Roman. Finite-density transition line for QCD with 695 MeV dynamical fermions. United States. doi:10.1103/PhysRevD.97.114504.
```

```
Greensite, Jeff, and Höllwieser, Roman. Thu .
"Finite-density transition line for QCD with 695 MeV dynamical fermions". United States. doi:10.1103/PhysRevD.97.114504.
```

```
@article{osti_1441027,
```

title = {Finite-density transition line for QCD with 695 MeV dynamical fermions},

author = {Greensite, Jeff and Höllwieser, Roman},

abstractNote = {We apply the relative weights method to SU(3) gauge theory with staggered fermions of mass 695 MeV at a set of temperatures in the range 151 ≤ T ≤ 267 MeV, to obtain an effective Polyakov line action at each temperature.We then apply a mean field method to search for phase transitions in the effective theory at finite densities. The result is a transition line in the plane of temperature and chemical potential, with an end point at high temperature, as expected, but also a second end point at a lower temperature. We cannot rule out the possibilities that a transition line reappears at temperatures lower than the range investigated, or that the second end point is absent for light quarks.},

doi = {10.1103/PhysRevD.97.114504},

journal = {Physical Review D},

number = 11,

volume = 97,

place = {United States},

year = {2018},

month = {6}

}

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DOI: 10.1103/PhysRevD.97.114504

DOI: 10.1103/PhysRevD.97.114504

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Cited by: 2 works

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