Casimir effect around disclinations
نویسنده
چکیده
This communication concerns the structure of the electromagnetic quantum vacuum in a disclinated insulator. It is shown that a nonzero vacuum energy density appears when the rotational symmetry of a continuous insulating elastic medium is broken by a disclination. An explicit expression is given for this Casimir energy density in terms of the parameter describing the disclination. ∗On leave from: Departamento de F́ısica Universidade Federal de Pernambuco 50670-901 Recife, PE, Brazil
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