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Showing 1 to 15 of 15 for “"Fermi liquids"”.
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Many-body effects in the thermodynamic properites of Fermi liquids and the electron-phonon system and in the excitation spectrum of liquid 4HE
… effects in the thermodynamic properties of Fermi liquids and of the electron-phonon system. Using normal liquid 3He as an example, I show that the T3lnT corrections due to spin fluctuations account for the finite temperature corrections to the leading term in the specific heat. I also …
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Many-Body Effects in the Thermodynamic Properties of Fermi Liquids and the Electron-Phonon System and in the Excitation Spectrum of Liquid Helium-4
… effects in the thermodynamic properties of Fermi liquids and of the electron-phonon system. Using normal liquid ('3)He as an example, I show that the T('3)lnT corrections due to spin fluctuations account for the finite temperature corrections to the leading term in the specific heat. I also …
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Zero sound modes in the AdS/CFT correspondence
… of zero sound wave excitations of charged fermion species living around the charged black hole of an AdS/CFT spacetime. In particular, we show that these bulk modes cause corresponding singularities in the correlation functions of boundary gauge fields. Possible implications for the study …
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The structure of many-body entanglement
… from gapped topological phases to gapless Fermi liquids in a variety of dimensions, can all be understood within a unified framework. We discuss tensor network states inspired by entanglement considerations, probe the limits of the boundary law for entanglement entropy, speculate about …
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Multipole Symmetries and Many Body Physics
… patterns of spontaneous symmetry breaking. The fermionic versions on the other hand are shown to host exotic non-Fermi liquids. We also report progress on understanding the ramifications that multipole conservation has for diffusion, showing that it leads to unusually large dynamical exponents …
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Vignettes in string theory : using geometry to probe the worldsheet and strongly coupled physics
… Reissner-Nordstrom black holes in AdS 4 and fermion correlation functions describing Non Fermi Liquids. We numerically study the effects of adding magnetic and electric dipole couplings for the fermions in the bulk. In general, the low energy physics is controlled by an emergent AdS 2 …
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Little Big Bangs in Helium-Three
… we have studied the properties of degenerate Fermi systems under certain extreme non-equilibrium conditions. First, we consider the dynamical evolution of localized hot spots in ultralow temperature Fermi liquids. Within a model calculation, it is found that such perturbations do not relax …
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Phases and phase transitions of strongly correlated electron systems
… have different effect on different parts of fermi surface. Perhaps most striking example of this is normal state of optimally doped cuprates; the quasiparticle peaks on the nominal fermi surface do not appear uniformly. We try to track such phenomena in heavy fermion systems, which are …
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Benchmark studies using quantum Monte Carlo: pressure estimators, energy, and entanglement
… methods can be used to treat bosons or fermions in weakly or strong interacting systems and in any phase. Properties computed for particles with bosonic statistics can be converged to their exact value at relatively moderate computational cost using diffusion quantum Monte Carlo. For …
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Electron Transport through Carbon Nanotube Quantum Dots in A Dissipative Environment
… system, that is distinct from the conventional Fermi liquids formed by electrons in two and three dimensions. Some of the most spectacular properties of LL are revealed in the process of electron tunneling: as a function of the applied bias or temperature the tunneling current demonstrates a …
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Slave particle study of the strongly correlated electrons
… Lev Landau: his theory of phase transition, and Fermi liquids. The Landau theory of phase transition and the Fermi liquid theory together, can successfully explain a wide range of phenomena from ferromagnetism and antiferromagnetism to the conventional superconductivity. However, in the last …
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Charge fluctuations of the strange metal in space and time
… quantum physics, as it defies the standard Fermi liquid theory of metals due to the absence of well-defined, electron-like quasiparticles. It has been presumed that strange metal behavior arises due to strong correlations between electrons that are not present in ordinary Fermi liquids, but …
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Holography and strongly correlated systems
… We review earlier work indicating that fermionic perturbations of such a state reveal non-Fermi-liquid behavior, i.e. gapless fermionic excitations that are not those of Fermi liquid theory. We perform a one-loop calculation in the bulk to compute the contribution from these Fermi …
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Fermi Surfaces and Where to Find Them: Quantum Oscillations in Kondo Insulators and High-Temperature Superconductors
The Fermi surface is a geometric concept that codifies the momenta of all electrons at the Fermi level. It is these electrons that underpin most physical properties of metals, and have made quantum oscillations, the experimental manifestation of the Fermi surface, a hallmark signature of metals. In …
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Beyond particles and localities in quantum matters
Many properties of strongly correlated materials behave differently from those obeying the standard theory of metals. Explaining such anomalous properties may require one to consider a non-traditional model. In this dissertation, we construct several phenomenological models based on the notions of …