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Gravity of Monopole and String and Gravitational Constant in 3He-A | | G.E. Volovik
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7 Apr 1998 | | Journal: | JETP Lett. 67 (1998) 698-704; Pisma Zh.Eksp.Teor.Fiz. 67 (1998) 666-671 | | Subject: | cond-mat gr-qc hep-ph hep-th | | Abstract: | We discuss the effective metric produced in superfluid 3He-A by such topological objects as radial disgyration and monopole. In relativistic theories these metrics are similar to that of the local string and global monopole correspondingly. But in 3He-A they have the negative angle deficit, which corresponds to the negative mass of the topological objects. The effective gravitational constant G in superfluid 3He-A, derived from the comparison with relativistic theories, is inversely proportional to the square of the gap amplitude Delta, which plays the part of the Planck energy cut-off. G depends on temperature and increases with T, which corresponds to the vacuum screening of the Newton’s constant. | | Source: | arXiv, cond-mat/9804078 | | Services: | Forum | Review | PDF | Favorites | |
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