Journal of Low Temperature Physics, ISSN 0022-2291, 7/2019, Volume 196, Issue 1, pp. 133 - 139

We investigate collective excitations of density fluctuations and a dynamic density structure factor in a mixture of Bose and Fermi gases in a normal phase....

Condensed Matter Physics | First sound | Normal state | Dynamic structure factor | Bose–Fermi mixture | Zero sound | Characterization and Evaluation of Materials | Physics | Magnetism, Magnetic Materials | Collective excitation | PHYSICS, CONDENSED MATTER | PHYSICS, APPLIED | GAS | Bose-Fermi mixture | Collisions (Nuclear physics) | Physics - Quantum Gases

Condensed Matter Physics | First sound | Normal state | Dynamic structure factor | Bose–Fermi mixture | Zero sound | Characterization and Evaluation of Materials | Physics | Magnetism, Magnetic Materials | Collective excitation | PHYSICS, CONDENSED MATTER | PHYSICS, APPLIED | GAS | Bose-Fermi mixture | Collisions (Nuclear physics) | Physics - Quantum Gases

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

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

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

Wediscuss the nature of symmetry breaking and the associated collective excitations for a system of bosons coupled to the electromagnetic field of two optical...

symmetry breaking | superradiance | supersolidity | ultracold atoms | Goldstone mode | cavity QED | self-ordering | PHYSICS, MULTIDISCIPLINARY | INSULATOR | MODEL | BOSE-EINSTEIN CONDENSATION | SUPERFLUID | QUANTUM PHASE-TRANSITION | CRYSTALS | GAS | Luminous intensity | Broken symmetry | Landau damping | Bose-Einstein condensates | Scattering | Holes | Invariance | Excitation | Electromagnetic fields | Symmetry | Bosons | Physics - Quantum Gases

symmetry breaking | superradiance | supersolidity | ultracold atoms | Goldstone mode | cavity QED | self-ordering | PHYSICS, MULTIDISCIPLINARY | INSULATOR | MODEL | BOSE-EINSTEIN CONDENSATION | SUPERFLUID | QUANTUM PHASE-TRANSITION | CRYSTALS | GAS | Luminous intensity | Broken symmetry | Landau damping | Bose-Einstein condensates | Scattering | Holes | Invariance | Excitation | Electromagnetic fields | Symmetry | Bosons | Physics - Quantum Gases

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

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

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

Bogoliubov theory | Cooper pairs | Superfluidity | Eigen values | Bosons

Journal Article

Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 09/2010, Volume 82, Issue 12

Using the strong coupling expansion of the compact and noncompact U (1) lattice gauge theories for monolayer graphene, we show analytically that fermion band...

PHYSICS, CONDENSED MATTER | QCD | U-1 GROUPS | HONEYCOMB STRUCTURES | FERMIONS | MECHANICAL STRUCTURES | COLLECTIVE EXCITATIONS | PARTICLE PROPERTIES | CHIRAL SYMMETRY | BOSONS | ELEMENTS | SYMMETRY BREAKING | LIE GROUPS | MASS | STRONG-COUPLING MODEL | PSEUDOSCALAR MESONS | MESONS | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | CARBON | EXCITATION | U GROUPS | MATHEMATICAL MODELS | SYMMETRY GROUPS | SIMULATION | ENERGY-LEVEL TRANSITIONS | NONMETALS | ELEMENTARY PARTICLES | GAUGE INVARIANCE | FIELD THEORIES | PIONS | QUANTUM CHROMODYNAMICS | SYMMETRY | EXPANSION | QUARKS | INVARIANCE PRINCIPLES | CHIRALITY | HADRONS | QUANTUM FIELD THEORY | PARTICLE MODELS

PHYSICS, CONDENSED MATTER | QCD | U-1 GROUPS | HONEYCOMB STRUCTURES | FERMIONS | MECHANICAL STRUCTURES | COLLECTIVE EXCITATIONS | PARTICLE PROPERTIES | CHIRAL SYMMETRY | BOSONS | ELEMENTS | SYMMETRY BREAKING | LIE GROUPS | MASS | STRONG-COUPLING MODEL | PSEUDOSCALAR MESONS | MESONS | PHYSICS OF ELEMENTARY PARTICLES AND FIELDS | CARBON | EXCITATION | U GROUPS | MATHEMATICAL MODELS | SYMMETRY GROUPS | SIMULATION | ENERGY-LEVEL TRANSITIONS | NONMETALS | ELEMENTARY PARTICLES | GAUGE INVARIANCE | FIELD THEORIES | PIONS | QUANTUM CHROMODYNAMICS | SYMMETRY | EXPANSION | QUARKS | INVARIANCE PRINCIPLES | CHIRALITY | HADRONS | QUANTUM FIELD THEORY | PARTICLE MODELS

Journal Article

Reviews of Modern Physics, ISSN 0034-6861, 09/2010, Volume 82, Issue 3, pp. 2365 - 2419

The nucleus is one of the most multifaceted many-body systems in the Universe. It exhibits a multitude of responses depending on the way one "probes" it. With...

INELASTIC ELECTRON-SCATTERING | COLLECTIVE M1 TRANSITIONS | CARLO SHELL-MODEL | ODD-MASS NUCLEI | PROTON-NEUTRON STRUCTURE | PHYSICS, MULTIDISCIPLINARY | INTERACTING-BOSON MODEL | HEAVY DEFORMED-NUCLEI | MIXED-SYMMETRY STATES | RARE-EARTH NUCLEI | RANDOM-PHASE-APPROXIMATION | Polarization (Electricity) | Magnetic dipoles | Particle accelerators | Design and construction | Electromagnetic fields | Analysis | ISOVECTORS | NEUTRONS | BEAMS | MANY-BODY PROBLEM | NUCLEAR MAGNETISM | MAGNETIC DIPOLES | PROTONS | DEFORMED NUCLEI | LAYERS | SPHERICAL CONFIGURATION | NUCLEAR PHYSICS AND RADIATION PHYSICS | MEV RANGE 01-10 | ACCELERATORS | SPIN FLIP | UNIVERSE

INELASTIC ELECTRON-SCATTERING | COLLECTIVE M1 TRANSITIONS | CARLO SHELL-MODEL | ODD-MASS NUCLEI | PROTON-NEUTRON STRUCTURE | PHYSICS, MULTIDISCIPLINARY | INTERACTING-BOSON MODEL | HEAVY DEFORMED-NUCLEI | MIXED-SYMMETRY STATES | RARE-EARTH NUCLEI | RANDOM-PHASE-APPROXIMATION | Polarization (Electricity) | Magnetic dipoles | Particle accelerators | Design and construction | Electromagnetic fields | Analysis | ISOVECTORS | NEUTRONS | BEAMS | MANY-BODY PROBLEM | NUCLEAR MAGNETISM | MAGNETIC DIPOLES | PROTONS | DEFORMED NUCLEI | LAYERS | SPHERICAL CONFIGURATION | NUCLEAR PHYSICS AND RADIATION PHYSICS | MEV RANGE 01-10 | ACCELERATORS | SPIN FLIP | UNIVERSE

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

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

11.
Full Text
Instability of insulating states in optical lattices due to collective phonon excitations

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

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

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, 01/2010, Volume 81, Issue 1

A systematic study of low energy nuclear structure at normal deformation is carried out using the Hartree-Fock-Bogoliubov theory extended by the generator...

PARTICLE-HOLE EXCITATIONS | BOSON MODEL | FORCE | APPROXIMATION | ELECTRIC MONOPOLE TRANSITIONS | CHARGE RADII | PHYSICS, NUCLEAR | D-1 EFFECTIVE INTERACTION | DEFORMATION | ISOTOPE-SHIFTS | 0(+) STATES | Physics - Nuclear Theory | Nuclear Theory | Physics | GENERATOR-COORDINATE METHOD | CALCULATION METHODS | MATHEMATICAL OPERATORS | FERMIONS | CORRELATIONS | COMPARATIVE EVALUATIONS | ENERGY LEVELS | COMPUTERIZED SIMULATION | QUANTUM OPERATORS | HAMILTONIANS | HARTREE-FOCK-BOGOLYUBOV THEORY | ELECTRON CORRELATION | ENERGY | DISTRIBUTION | EXCITATION | NEUTRONS | EVEN-EVEN NUCLEI | MATRIX ELEMENTS | EVALUATION | INTERACTIONS | ENERGY-LEVEL TRANSITIONS | SIMULATION | PROTONS | ELEMENTARY PARTICLES | DEFORMED NUCLEI | NUCLEONS | ACCURACY | NUCLEAR PHYSICS AND RADIATION PHYSICS | NUCLEI | SPECTROSCOPY | BINDING ENERGY | NUCLEAR STRUCTURE | YRAST STATES | BARYONS | HADRONS | GROUND STATES

PARTICLE-HOLE EXCITATIONS | BOSON MODEL | FORCE | APPROXIMATION | ELECTRIC MONOPOLE TRANSITIONS | CHARGE RADII | PHYSICS, NUCLEAR | D-1 EFFECTIVE INTERACTION | DEFORMATION | ISOTOPE-SHIFTS | 0(+) STATES | Physics - Nuclear Theory | Nuclear Theory | Physics | GENERATOR-COORDINATE METHOD | CALCULATION METHODS | MATHEMATICAL OPERATORS | FERMIONS | CORRELATIONS | COMPARATIVE EVALUATIONS | ENERGY LEVELS | COMPUTERIZED SIMULATION | QUANTUM OPERATORS | HAMILTONIANS | HARTREE-FOCK-BOGOLYUBOV THEORY | ELECTRON CORRELATION | ENERGY | DISTRIBUTION | EXCITATION | NEUTRONS | EVEN-EVEN NUCLEI | MATRIX ELEMENTS | EVALUATION | INTERACTIONS | ENERGY-LEVEL TRANSITIONS | SIMULATION | PROTONS | ELEMENTARY PARTICLES | DEFORMED NUCLEI | NUCLEONS | ACCURACY | NUCLEAR PHYSICS AND RADIATION PHYSICS | NUCLEI | SPECTROSCOPY | BINDING ENERGY | NUCLEAR STRUCTURE | YRAST STATES | BARYONS | HADRONS | GROUND STATES

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

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

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

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

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

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

BOSONS | EINSTEIN CONDENSATION | PHYSICS

Journal Article