• Coherence vs. decoherence in (some) problems of condensed matter physics

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      https://www.ias.ac.in/article/fulltext/pram/059/02/0203-0219

    • Keywords

       

      Coherence; decoherence; high Tc superconductivity

    • Abstract

       

      We present an ‘overview’ of coherence-to-decoherence transition in certain selected problems of condensed matter physics. Our treatment is based on a subsystem-plus-environment approach. All the examples chosen in this paper have one thing in common — the environmental degrees of freedom are taken to be bosonic and their spectral density of excitations is assumed to be ‘ohmic’. The examples are drawn from a variety of phenomena in condensed matter physics involving, for instance, quantum diffusion of hydrogen in metals, Landau diamagnetism and c-axis transport in high Tc superconductors.

    • Author Affiliations

       

      Sushanta Dattagupta1 2

      1. S N Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata - 700 098, India
      2. Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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