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• "Spin-channel Keldysh field theory for weakly interacting quantum dots", Smirnov, Grifoni, 2012

  Publication

  We develop a low-energy nonequilibrium field theory for weakly interacting quantum dots. The theory is based on the Keldysh field integral in the spin...

  Publication on epub.uni-regensburg.de: "Spin-channel Keldysh field theory for weakly interacting quantum dots" (external link, opens in a new window)

• "Topographical fingerprints of many-body interference in STM junctions on thin insulating films", Donarini, Siegert, Sobczyk, Grifoni, 2012

  Publication

  Negative differential conductance is a nonlinear transport phenomenon ubiquitous in molecular nanojunctions. Its physical origin can be the most...

  Publication on epub.uni-regensburg.de: "Topographical fingerprints of many-body interference in STM junctions on thin insulating films" (external link, opens in a new window)

• "Dissipative tunneling with periodic polychromatic driving: Exact results and tractable approximations", Grifoni, Hartmann, Hänggi, 1997

  Publication

  We investigate the long-time dynamics in dissipative two-level-systems (TLS) when driven by — monochromatic or pulse-shaped — periodic fields. The...

  Publication on epub.uni-regensburg.de: "Dissipative tunneling with periodic polychromatic driving: Exact results and tractable approximations" (external link, opens in a new window)

• "Dissipative tunneling control by elliptically polarized fields", Hartmann, Grifoni, Hänggi, 1998

  Publication

  The tunneling dynamics of a dissipative two-level system that is strongly driven by elliptically polarized electric fields is investigated. The...

  Publication on epub.uni-regensburg.de: "Dissipative tunneling control by elliptically polarized fields" (external link, opens in a new window)

• "Coherences and populations in the driven damped two-state system", Grifoni, Winterstetter, Weiss, 1997

  Publication

  The dynamics of the density matrix of the two-state system under the influence of time-dependent deterministic and fluctuating forces is investigated....

  Publication on epub.uni-regensburg.de: "Coherences and populations in the driven damped two-state system" (external link, opens in a new window)

• "Dissipative transport in dc-ac–driven tight-binding lattices", Hartmann, Grifoni, Hänggi, 1997

  Publication

  We investigate the incoherent dissipative quantum transport of a particle in a periodic lattice being driven nonlinearly by dc-ac fields. The particle...

  Publication on epub.uni-regensburg.de: "Dissipative transport in dc-ac–driven tight-binding lattices" (external link, opens in a new window)

• "Nonadiabatic Quantum Brownian Rectifiers", Goychuk, Grifoni, Hänggi, 1998

  Publication

  We study both dissipative and nondissipative quantum transport in discrete Brownian rectifiers being driven by nonthermal noise that is unbiased on...

  Publication on epub.uni-regensburg.de: "Nonadiabatic Quantum Brownian Rectifiers" (external link, opens in a new window)

• "Variational states for the spin-Peierls system", Frahm, Schliemann, 1997

  Publication

  We introduce a family of Jastrow pair product states for quasi-one-dimensional spin systems. Depending on a parameter they interpolate between the...

  Publication on epub.uni-regensburg.de: "Variational states for the spin-Peierls system" (external link, opens in a new window)

• "Semiclassical description of Heisenberg models via spin-coherent states", Schliemann, Mertens, 1998

  Publication

  We use spin-coherent states as the basis of a time-dependent variational ansatz for a semiclassical description of a large family of Heisenberg...

  Publication on epub.uni-regensburg.de: "Semiclassical description of Heisenberg models via spin-coherent states" (external link, opens in a new window)

• "Comment on “Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields” by Wang and Zhao", Grifoni, Hartmann, Hänggi, 1997

  Publication

  Recent results on the dynamics of a two-state system driven by dc-ac fields are discussed. We show that the approximation put forward in the work by...

  Publication on epub.uni-regensburg.de: "Comment on “Transient dynamics of Ohmic dissipative two-level systems driven by dc-ac fields” by Wang and Zhao" (external link, opens in a new window)