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Dependence of lattice hadron masses on external magnetic fields
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för teoretisk fysik.
1995 (engelsk)Inngår i: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 457, nr 3, s. 577-593Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We study the variation of the hadron masses in the presence of external magnetic fields of strength of the order of the masses themselves.

We identify the main factors affecting the lattice simulation results:

•

- the boundary discontinuities for eB ⪡ 2π/L2a2.

•

- the SU(6) choice of the hadron wave function.

We confirm qualitatively the earlier theoretical ansatz on the linear behaviour of the masses with the magnetic field and, as a by-product, we improve the lattice measurements of the nucleon magnetic moments.

However our systematic and statistical errors preclude us from measuring the theoretically predicted field strength at which the proton becomes heavier than the neutron.

sted, utgiver, år, opplag, sider
1995. Vol. 457, nr 3, s. 577-593
Emneord [en]
quantum-chromodynamics, QCD
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-75391DOI: 10.1016/0550-3213(95)00535-8OAI: oai:DiVA.org:uu-75391DiVA, id: diva2:103301
Tilgjengelig fra: 2008-10-17 Laget: 2008-10-17 Sist oppdatert: 2017-12-14bibliografisk kontrollert

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