Axion strings are superconducting
Axion strings are superconducting
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轴子弦是超导的
DOI:
10.1007/jhep06(2021)052
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发表时间:
2021
影响因子:
5.4
通讯作者:
Telem, Ofri
中科院分区:
文献类型:
--
作者:
Fukuda, Hajime;Manohar, Aneesh V.;Murayama, Hitoshi;Telem, Ofri
We explore the cosmological consequences of the superconductivity of QCD axion strings. Axion strings can support a sizeable chiral electric current and charge density, which alters their early universe dynamics. We examine the possibility that shrinking axion string loops can become effectively stable remnants called vortons, supported by the repulsive electromagnetic force of the string current. We find that vortons in our scenario are generically unstable, and so do not pose a cosmological difficulty. Furthermore, if a primordial magnetic field (PMF) exists in the early universe, a large current is induced on axion strings, creating a significant drag force from interactions with the surrounding plasma. As a result, the strings are slowed down, which leads to an orders of magnitude enhancement in the number of strings per Hubble volume. Finally, we study potential implications for the QCD axion relic abundance. The QCD axion window is shifted by orders of magnitude in some parts of our parameter space.
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DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
A. Davis;T. Kibble;M. Pickles;D. Steer
通讯作者:
D. Steer
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
C. Martins;E. Shellard
通讯作者:
E. Shellard
DOI:
--
发表时间:
1988
期刊:
Physical Review D, Particles and fields
影响因子:
--
作者:
Clara E. Hill;H. Hodges;Michael S. Turner
通讯作者:
Michael S. Turner
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
A. Babul;T. Piran;D. Spergel
通讯作者:
D. Spergel
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
B. Carter;R. Brandenberger;A. Davis;G. Sigl
通讯作者:
G. Sigl