Chiral Casimir forces: Repulsive, enhanced, tunable

Qing Dong Jiang, Frank Wilczek

    Research output: Contribution to journalArticlepeer-review

    49 Scopus citations


    Both theoretical interest and practical significance attach to the sign and strength of Casimir forces. A famous, discouraging no-go theorem states that "the Casimir force between two bodies with reflection symmetry is always attractive." Here, we identify a promising way to avoid the assumptions of the no-go theorem, and propose a universal way to realize repulsive Casimir forces. We show that the sign and strength of Casimir forces can be adjusted by inserting optically active or gyrotropic media between bodies, and modulated by external fields.

    Original languageEnglish (US)
    Article number125403
    JournalPhysical Review B
    Issue number12
    StatePublished - Mar 4 2019

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics


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