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Many-Body Physics with Ultracold Gases

- I. Bloch, J. Dalibard, W. Zwerger
- Physics
- 22 April 2007

This paper reviews recent experimental and theoretical progress concerning many-body phenomena in dilute, ultracold gases. It focuses on effects beyond standard weak-coupling descriptions, such as… Expand

Dynamics of the dissipative two-state system

- A. Leggett, S. Chakravarty, A. Dorsey, M. Fisher, A. Garg, W. Zwerger
- Physics
- 1987

This paper presents the results of a functional-integral approach to the dynamics of a two-state system coupled to a dissipative environment. It is primarily an extended account of results obtained… Expand

Theory of ground state cooling of a mechanical oscillator using dynamical backaction.

- I. Wilson-Rae, N. Nooshi, W. Zwerger, T. Kippenberg
- PhysicsPhysical review letters
- 5 February 2007

TLDR

The BCS-BEC crossover and the unitary fermi gas

- M. Randeria, W. Zwerger, M. Zwierlein
- Physics
- 2012

There has been great excitement about the recent experimental and theoretical progress in elucidating the Bardeen-Cooper-Schrieffer (BCS) to Bose Einstein condensation (BEC) crossover in ultracold… Expand

Mott-Hubbard transition of cold atoms in optical lattices

- W. Zwerger
- Physics
- 15 November 2002

We discuss the superfluid (SF) to Mott-insulator transition of cold atoms in optical lattices recently observed by Greiner et al (2002 Nature 415 39). The fundamental properties of both phases and… Expand

Viscosity and scale invariance in the unitary Fermi gas

- T. Enss, R. Haussmann, W. Zwerger
- Physics
- 30 July 2010

Thermodynamics of the BCS-BEC crossover

- R. Haussmann, W. Rantner, S. Cerrito, W. Zwerger
- Physics
- 11 August 2006

We present a self-consistent theory for the thermodynamics of the BCS-BEC crossover in the normal and superfluid phase which is both conserving and gapless. It is based on the variational many-body… Expand

Spectral Functions and rf Response of Ultracold Fermionic Atoms

- R. Haussmann, M. Punk, W. Zwerger
- Physics
- 8 April 2009

We present a calculation of the spectral functions and the associated rf response of ultracold fermionic atoms near a Feshbach resonance. The single particle spectra are peaked at energies that can… Expand

Polaron-to-molecule transition in a strongly imbalanced Fermi gas

- M. Punk, P. Dumitrescu, W. Zwerger
- Physics
- 10 August 2009

A single down spin Fermion with an attractive, zero range interaction with a Fermi sea of up-spin Fermions forms a polaronic quasiparticle. The associated quasipart icle weight vanishes beyond a… Expand

Density matrix renormalization group for disordered bosons in one dimension

- S. Rapsch, U. Schollwoeck, W. Zwerger
- Physics
- 11 January 1999

We calculate the zero-temperature phase diagram of the disordered Bose-Hubbard model in one dimension using the density matrix renormalization group. For integer filling the Mott insulator is always… Expand

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