Search Results - "Bruun, G. M"

Topological Superfluid in a Fermi-Bose Mixture with a High Critical Temperature by Wu, Zhigang, Bruun, G M

“…We show that a 2D spin-polarized Fermi gas immersed in a 3D Bose-Einstein condensate constitutes a very promising system for realizing a p_{x}+ip_{y}…”
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Bipolarons in a Bose-Einstein Condensate by Camacho-Guardian, A, Peña Ardila, L A, Pohl, T, Bruun, G M

“…Mobile impurities in a Bose-Einstein condensate form quasiparticles called polarons. Here, we show that two such polarons can bind to form a bound bipolaron…”
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Metastability and coherence of repulsive polarons in a strongly interacting Fermi mixture by Kohstall, C., Zaccanti, M., Jag, M., Trenkwalder, A., Massignan, P., Bruun, G. M., Schreck, F., Grimm, R.

“…Radio-frequency spectroscopy is used to identify a long-lived, metastable quasiparticle in a lithium–potassium Fermi mixture with strongly repulsive…”
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Nonequilibrium Hole Dynamics in Antiferromagnets: Damped Strings and Polarons by Nielsen, K Knakkergaard, Pohl, T, Bruun, G M

“…We develop a nonperturbative theory for hole dynamics in antiferromagnetic spin lattices, as described by the t-J model. This is achieved by generalizing the…”
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Mediated Interaction between Ions in Quantum Degenerate Gases by Ding, Shanshan, Drewsen, Michael, Arlt, Jan J., Bruun, G. M.

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Mediated Interactions and Photon Bound States in an Exciton-Polariton Mixture by Camacho-Guardian, A, Bastarrachea-Magnani, M A, Bruun, G M

“…The quest to realize strongly interacting photons remains an outstanding challenge both for fundamental science and for applications. Here, we explore mediated…”
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Critical slowdown of non-equilibrium polaron dynamics by Nielsen, K Knakkergaard, Ardila, L A Peña, Bruun, G M, Pohl, T

“…We study the quantum dynamics of a single impurity following its sudden immersion into a Bose-Einstein condensate. The ensuing formation of the Bose polaron in…”
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Few-Body Precursor of the Higgs Mode in a Fermi Gas by Bjerlin, J, Reimann, S M, Bruun, G M

“…We demonstrate that an undamped few-body precursor of the Higgs mode can be investigated in a harmonically trapped Fermi gas. Using exact diagonalization, the…”
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Shear viscosity and spin-diffusion coefficient of a two-dimensional Fermi gas by Bruun, G. M.

“…Using kinetic theory, we calculate the shear viscosity and the spin-diffusion coefficient as well as the associated relaxation times for a two-component Fermi…”
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Superfluid Flow of Polaron Polaritons above Landau’s Critical Velocity by Nielsen, K. Knakkergaard, Camacho-Guardian, A., Bruun, G. M., Pohl, T.

“…We develop a theory for the interaction of light with superfluid optical media, describing the motion of quantum impurities that are created and dragged…”
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High-Frequency Sound in a Unitary Fermi Gas by Kuhn, C C N, Hoinka, S, Herrera, I, Dyke, P, Kinnunen, J J, Bruun, G M, Vale, C J

“…We present an experimental and theoretical study of the phonon mode in a unitary Fermi gas. Using two-photon Bragg spectroscopy, we measure excitation spectra…”
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Higher first Chern numbers in one-dimensional Bose-Fermi mixtures by Nielsen, Kristian Knakkergaard, Wu, Zhigang, Bruun, G M

“…We propose to use a one-dimensional system consisting of identical fermions in a periodically driven lattice immersed in a Bose gas, to realise topological…”
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Decay of polarons and molecules in a strongly polarized Fermi gas by Bruun, G M, Massignan, P

“…The ground state of an impurity immersed in a Fermi sea changes from a polaron to a molecule as the interaction strength is increased. We show here that the…”
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Anisotropic relaxation dynamics in a dipolar Fermi gas driven out of equilibrium by Aikawa, K, Frisch, A, Mark, M, Baier, S, Grimm, R, Bohn, J L, Jin, D S, Bruun, G M, Ferlaino, F

“…We report on the observation of a large anisotropy in the rethermalization dynamics of an ultracold dipolar Fermi gas driven out of equilibrium. Our system…”
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Density wave instabilities of tilted fermionic dipoles in a multilayer geometry by Block, J K, Zinner, N T, Bruun, G M

“…We consider the density wave instability of fermionic dipoles aligned by an external field and moving in equidistant layers at zero temperature. Using a…”
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Mixed parity pairing in a dipolar gas by Bruun, G. M., Hainzl, C., Laux, M.

“…We show that fermionic dipoles in a two-layer geometry form Cooper pairs with both singlet and triplet components when they are tilted with respect to the…”
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Repulsive polarons and itinerant ferromagnetism in strongly polarized Fermi gases by Massignan, P., Bruun, G. M.

“…We analyze the properties of a single impurity immersed in a Fermi sea. At positive energy and scattering lengths, we show that the system possesses a…”
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Effective theory of Feshbach resonances and many-body properties of Fermi gases by Bruun, G M, Pethick, C J

“…For calculating low-energy properties of a dilute gas of atoms interacting via a Feshbach resonance, we develop an effective theory in which the parameters…”
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Low energy collective modes of a superfluid trapped atomic Fermi gas by Bruun, G M, Mottelson, B R

“…We consider the low energy collective mode spectrum of a superfluid Fermi gas in a spherical trap in the collisionless regime. Using a self-consistent…”
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Spin diffusion in Fermi gases by Bruun, G M

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