Quantum matter without quasiparticles


Sachdev, S. (2014). Quantum matter without quasiparticles. Perimeter Institute. https://pirsa.org/14050109


Sachdev, Subir. Quantum matter without quasiparticles. Perimeter Institute, May. 29, 2014, https://pirsa.org/14050109


          @misc{ pirsa_14050109,
            doi = {},
            url = {https://pirsa.org/14050109},
            author = {Sachdev, Subir},
            keywords = {},
            language = {en},
            title = {Quantum matter without quasiparticles},
            publisher = {Perimeter Institute},
            year = {2014},
            month = {may},
            note = {PIRSA:14050109 see, \url{https://pirsa.org}}


Modern materials abound in systems to which the quasiparticle picture does not apply, and developing their theoretical description remains an important challenge in condensed matter physics. I will describe recent progress in understanding the dynamics of two systems without quasiparticles: (i) ultracold atoms in optical lattices, and (ii) the nematic quantum critical point of metals with applications to the `strange metal’ found in the high temperature superconductors. A combination of field-theoretic, holographic, and numerical methods will be used.