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Journal of Low Temperature Physics, ISSN 0022-2291, 7/2019, Volume 196, Issue 1, pp. 133 - 139
Journal Article
Physical Review C - Nuclear Physics, ISSN 0556-2813, 12/2015, Volume 92, Issue 6
Background: One-phonon mixed-symmetry quadrupole excitations are a well-known feature of near-spherical, vibrational nuclei. Their interpretation as a... 
VIBRATIONAL NUCLEI | NEUTRON MIXED-SYMMETRY | LIFETIMES | SHELL-MODEL | MO-94 | INTERACTING BOSON MODEL | QUADRUPOLE PHONON | PHYSICS, NUCLEAR | PROTON | SPHERICAL NUCLEI | EXCITED-STATES | Fysik | Physical Sciences
Journal Article
Physical Review Letters, ISSN 0031-9007, 10/2016, Volume 117, Issue 18, p. 180501
We demonstrate deterministic generation of two distinct collective excitations in one atomic ensemble, and we realize the Hong-Ou-Mandel interference between... 
MEMORIES | PHYSICS, MULTIDISCIPLINARY | PHOTONS | LIGHT | TIME | OPTICS | COHERENCE | QUANTUM INTERFERENCE | Noon | Interference | Atomic excitations | Photons | Excitation | Magnetic fields | Sampling | Bosons | Physics - Quantum Physics
Journal Article
New Journal of Physics, ISSN 1367-2630, 12/2017, Volume 19, Issue 12, p. 123027
Journal Article
Archive for Rational Mechanics and Analysis, ISSN 0003-9527, 2/2015, Volume 215, Issue 2, pp. 381 - 417
We study the spectrum of a large system of N identical bosons interacting via a two-body potential with strength 1/N. In this mean-field regime, Bogoliubov’s... 
Mechanics | Physics, general | Fluid- and Aerodynamics | Statistical Physics, Dynamical Systems and Complexity | Theoretical, Mathematical and Computational Physics | Physics | MATHEMATICS, APPLIED | STATES | MECHANICS | SYSTEMS | ASYMPTOTICS | INTERACTING BOSONS | SPECTRUM | Bogoliubov theory | Approximation | Fluctuation | Fluid flow | Condensing | Eigenvectors | Excitation spectra | Bosons
Journal Article
Physica B: Physics of Condensed Matter, ISSN 0921-4526, 05/2017, Volume 512, pp. 12 - 15
In a gas of N interacting bosons, the Hamiltonian Hc, obtained by dropping all the interaction terms between free bosons with moment ℏk≠0, is diagonalized... 
Boson systems | Interacting boson models | Superfluidity | Bose–Einstein condensates | PHYSICS, CONDENSED MATTER | Bose-Einstein condensates
Journal Article
Physica B. Condensed Matter, ISSN 0921-4526, 05/2017, Volume 512, p. 12
In a gas of N interacting bosons, the Hamiltonian Hc, obtained by dropping all the interaction terms between free bosons with moment ℏk≠0, is diagonalized... 
Bogoliubov theory | Cooper pairs | Superfluidity | Eigen values | Bosons
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 01/2009, Volume 79, Issue 1
Boson droplets (i.e., dense assemblies of bosons at low temperature) are shown to mask a significant amount of single-particle behavior and to manifest... 
wave equations | FOKKER-PLANCK EQUATION | MOLECULAR FRICTION | BROWNIAN PARTICLES | QUANTUM | NONEQUILIBRIUM BATH | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | CORRELATION-ENERGY | boson systems | EINSTEIN CONDENSATION | LIOUVILLE EQUATION | PADE APPROXIMANTS | DYNAMICS | OPTICS | wave functions
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 02/2015, Volume 91, Issue 2
The effect of collective phonon excitations on the properties of cold atoms in optical lattices is investigated. These phonon excitations are collective... 
GASES | METASTABLE STATE | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | ATOMS | MANY-BODY PHYSICS | OPTICS | BOSONS | 2 DIMENSIONS | Physics - Quantum Gases
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 01/2008, Volume 77, Issue 1, p. 015601
We calculate the excitation modes of a one-dimensional (1D) dipolar quantum gas confined in a harmonic trap with frequency omega(0) and predict how the... 
BOSE-EINSTEIN CONDENSATE | SHIFTS | OPTICS | BOSONS | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | TONKS-GIRARDEAU GAS | Condensed Matter | Physics | Other
Journal Article
Physical Review C - Nuclear Physics, ISSN 0556-2813, 12/2015, Volume 92, Issue 6
The excitation spectra in the deformed nucleus U-232 have been studied by means of the (p, t) reaction, using the Q3D spectrograph facility at the Munich... 
COLLECTIVE STATES | CHAOS | DECAY | U ALGEBRAIC LATTICE | EVEN-EVEN NUCLEI | INTERACTING BOSON MODEL | PHYSICS, NUCLEAR
Journal Article
Physical Review C - Nuclear Physics, ISSN 0556-2813, 11/2014, Volume 90, Issue 5
Background: Excitations with mixed proton-neutron symmetry have been previously observed in the N = 52 isotones. Besides the well-established quadrupole... 
RATES | SHELL-MODEL | COLLECTIVE NUCLEAR-STATES | DIPOLE EXCITATIONS | MO-94 | INTERACTING BOSON MODEL | PHYSICS, NUCLEAR | PROTON
Journal Article
Physical Review Letters, ISSN 0031-9007, 12/2003, Volume 91, Issue 25, pp. 2504021 - 2504024
We report on the realization of a trapped one-dimensional Bose gas and its characterization by means of measuring its lowest lying collective excitations. The... 
EXCITATIONS | IMPENETRABLE BOSONS | PHYSICS, MULTIDISCIPLINARY | INTERACTING BOSE-GAS | SOLITON | Physics - Soft Condensed Matter
Journal Article
Science, ISSN 0036-8075, 9/2014, Volume 345, Issue 6201, pp. 1145 - 1149
Superconductors host collective modes that can be manipulated with light. We show that a strong terahertz light field can induce oscillations of the... 
REPORTS | MATTER | EXCITATION | PARTICLES | MULTIDISCIPLINARY SCIENCES | GAP | CHARGE-DENSITY WAVES | RELAXATION | GENERATION | Superconductors | Research | Properties | Particle spin | Quantum theory | Testing | Electric fields | Particle physics | Superconductivity | Thin films | Correlation | Precession | Higgs bosons | Electromagnetic pulses | Wavefunctions
Journal Article
Physical Review Letters, ISSN 0031-9007, 06/2015, Volume 114, Issue 22, p. 225303
Using an effective field theory we describe the low energy bosonic excitations in a three-dimensional ultracold mixture of spin-1 bosons and spin-1/2 fermions.... 
GAS | EXCITATIONS | PHYSICS, MULTIDISCIPLINARY | EINSTEIN | Damping | Fluids | Fermions | Ferromagnetism | Excitation | Superfluidity | Density | Bosons
Journal Article
Physical Review Letters, ISSN 0031-9007, 1996, Volume 77, Issue 9, pp. 1667 - 1670
We discuss the collective excitation spectrum and condensate depletion of a dilute, interacting Bose condensate confined to a harmonic potential, within the... 
BOSONS | EINSTEIN CONDENSATION | PHYSICS
Journal Article