Browsing NTNU Open by Author "Sernelius, Bo. E."

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    • Casimir forces in a plasma: possible connections to Yukawa potentials 

      Ninham, Barry W.; Boström, Mathias; Persson, Clas; Brevik, Iver Håkon; Buhmann, Stefan Yoshi; Sernelius, Bo. E. (Journal article; Peer reviewed, 2014)
      We present theoretical and numerical results for the screened Casimir effect between perfect metal surfaces in a plasma. We show how the Casimir effect in an electron-positron plasma can provide an important contribution ...

    • Finite-size-dependent dispersion potentials between atoms and ions dissolved in water 

      Thiyam, Priyadarshini; Boström, Mathias; Persson, Clas; Parsons, Drew F.; Brevik, Iver Håkon; Sernelius, Bo. E. (Journal article; Peer reviewed, 2014)
      A non-expanded theory is used for dispersion potentials between atoms and ions dissolved in a medium. The first-order dispersion interaction between two atoms in an excited state must account for the fact that the two atoms ...

    • Non-perturbative theory of dispersion interactions 

      Boström, Mathias; Thiyam, Priyadarshini; Persson, Clas; Parsons, Drew F.; Buhmann, Stefan Yoshi; Brevik, Iver Håkon; Sernelius, Bo. E. (Journal article; Peer reviewed, 2015)
      Some open questions exist with fluctuation-induced forces between extended dipoles. Conventional intuition derives from large-separation perturbative approximations to dispersion force theory. Here, we present a full ...

    • Nonperturbative theory for the dispersion self-energy of atoms 

      Thiyam, Priyadarshini; Persson, Clas; Brevik, Iver Håkon; Sernelius, Bo. E.; Boström, Mathias (Journal article; Peer reviewed, 2014)
      We go beyond the approximate series expansions used in the dispersion theory of finite-size atoms. We demonstrate that a correct, and nonperturbative, theory dramatically alters the dispersion self-energies of atoms. The ...