Lattice QCD solution to the U(1) problem
Physical Review D Volume 51
Page 3952-3954
published_at 1995
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| File | |
| Title ( eng ) |
Lattice QCD solution to the U(1) problem
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| Creator |
Fukugita M
Kuramashi Y
Ukawa A
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| Source Title |
Physical Review D
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| Volume | 51 |
| Start Page | 3952 |
| End Page | 3954 |
| Abstract |
It is shown in quenched lattice QCD that the mass splitting between η' and a pion arises from gauge configurations with a nonzero topological charge Q, its magnitude increasing for larger values of ‖Q‖; the contribution from the disconnected quark loop is strongly hindered unless the topological charge is excited. This demonstrates the explicit relation between the large η' meson mass and gauge field topology, which is in the line of the argument in the continuum of instantons and the 1/N expansion.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The American Physical Society
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| Date of Issued | 1995 |
| Rights |
Copyright (c) 1995 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1550-7998
[DOI] http://dx.doi.org/10.1103/PhysRevD.51.3952
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