hydrodynamics of a rotating strongly interacting fermi gas
... The pace of scientific advancement tends to follow in step with the development of the scientific tools that make progress possible. The discovery of bacteria was made possible through the use of the microscope, and devices such as particle accelerators allow the predictions of the Standard Model to ...
... The pace of scientific advancement tends to follow in step with the development of the scientific tools that make progress possible. The discovery of bacteria was made possible through the use of the microscope, and devices such as particle accelerators allow the predictions of the Standard Model to ...
About Vortex Physics and Vortex Losses
... produce photos of the leaf, using their self built high voltage device in the darkroom, even after the original had been removed. The potential vortices still present under the plexiglas remained detectable by their storage effect. Several authors have called this a “phantom leaf effect” and it has ...
... produce photos of the leaf, using their self built high voltage device in the darkroom, even after the original had been removed. The potential vortices still present under the plexiglas remained detectable by their storage effect. Several authors have called this a “phantom leaf effect” and it has ...
Microscopic Realization of 2-Dimensional Bosonic Topological
... where Jij = α,β (−ib†α,i bβ,j + h.c.) is the current operator of the condensate, and g > D. Under above interaction, the vortex/anti-vortex tends to increase/decrease the spin momentum at its core and as a consequence vortex (anti-vortex) will change its sign under time reversal. According to our pr ...
... where Jij = α,β (−ib†α,i bβ,j + h.c.) is the current operator of the condensate, and g > D. Under above interaction, the vortex/anti-vortex tends to increase/decrease the spin momentum at its core and as a consequence vortex (anti-vortex) will change its sign under time reversal. According to our pr ...
Microscopy of 2D Fermi Gases - Institut für Laserphysik
... the strongly correlated Tonks-Girardeau gas [30, 31] and the Luttinger liquid [32, 33]. The 2D geometry is special in the sense that it is known to exhibit distinct effects not encountered in three-dimensional (3D) and 1D counterparts. For instance, fluctuations destroy true long-range order and pre ...
... the strongly correlated Tonks-Girardeau gas [30, 31] and the Luttinger liquid [32, 33]. The 2D geometry is special in the sense that it is known to exhibit distinct effects not encountered in three-dimensional (3D) and 1D counterparts. For instance, fluctuations destroy true long-range order and pre ...
Low-Melting-Temperature Metals for Possible
... Therefore we consider here the possible use of low-melting-temperature metals, chiefly lead-bismuth alloys (variants on solders). Lead, when combined with bismuth in an alloy that is 45% Pb by weight, has a melting point of only 126◦ C (255◦ F). The Bi-Pb phase diagram is shown in Fig. 1, taken from ...
... Therefore we consider here the possible use of low-melting-temperature metals, chiefly lead-bismuth alloys (variants on solders). Lead, when combined with bismuth in an alloy that is 45% Pb by weight, has a melting point of only 126◦ C (255◦ F). The Bi-Pb phase diagram is shown in Fig. 1, taken from ...
Phase fluctuations in a conventional s-wave superconductor
... The work presented here, was carried out for the partial fulfillment of the requirements for the degree, doctor of philosophy in physics from Tata Institute of Fundamental Research, Mumbai, India. The superconductivity in a clean conventional superconductor is well described by Bardeen-Cooper-Schrie ...
... The work presented here, was carried out for the partial fulfillment of the requirements for the degree, doctor of philosophy in physics from Tata Institute of Fundamental Research, Mumbai, India. The superconductivity in a clean conventional superconductor is well described by Bardeen-Cooper-Schrie ...
File
... adaptive gain control A control technique which changes a feedback controller's gain based on measured process variables or controller set points. adaptive tuning In a control system, a way to change control parameters according to current process conditions. adiabatic Referring to a process which t ...
... adaptive gain control A control technique which changes a feedback controller's gain based on measured process variables or controller set points. adaptive tuning In a control system, a way to change control parameters according to current process conditions. adiabatic Referring to a process which t ...
High-precision measurement of the electron drift velocity in Ne
... The Magboltz program solves the Boltzmann transport equation. It uses a solution for the energy distribution function up to the third Legendre polynomial. With the known electron cross-sections for the different gases, it is then possible to calculate the electron drift velocity as well as the longi ...
... The Magboltz program solves the Boltzmann transport equation. It uses a solution for the energy distribution function up to the third Legendre polynomial. With the known electron cross-sections for the different gases, it is then possible to calculate the electron drift velocity as well as the longi ...
Liquid Flows in Microchannels
... interaction. The result is an electrically charged double layer that induces a charge distribution in a very thin layer of fluid close to the wall. Application of an electric field to this layer creates a body force capable of moving the fluid as if it were slipping over the wall. The electroosmotic ...
... interaction. The result is an electrically charged double layer that induces a charge distribution in a very thin layer of fluid close to the wall. Application of an electric field to this layer creates a body force capable of moving the fluid as if it were slipping over the wall. The electroosmotic ...
GV3311971210
... and a sixth-order Runge-Kutta integration scheme. Ghosh and Pop [11] have studied thermal radiation of an optically-thick gray gas in the presence of indirect natural convection showing that the pressure rise region leads to increase in the velocity with an increase of radiation parameter. Recently ...
... and a sixth-order Runge-Kutta integration scheme. Ghosh and Pop [11] have studied thermal radiation of an optically-thick gray gas in the presence of indirect natural convection showing that the pressure rise region leads to increase in the velocity with an increase of radiation parameter. Recently ...
Long-term unsteadiness and large-scale structures in Rayleigh-Bénard convection
... Convection is one of the major modes of heat transfer and mass transfer and occurs in a wide range of (geo)physical situations, like in the atmosphere, the oceans and planetary mantles. It also plays an important role in many engineering applications, like crystal growth processes and in-door climat ...
... Convection is one of the major modes of heat transfer and mass transfer and occurs in a wide range of (geo)physical situations, like in the atmosphere, the oceans and planetary mantles. It also plays an important role in many engineering applications, like crystal growth processes and in-door climat ...
- Triangle Universities Nuclear Laboratory
... new experiment aiming at two orders of magnitude improvement (∼ 10−28 e·cm) over the current experimental upper limit has been proposed in the United States. In the experiment, the measurement cell will be made of dTPB-dPS coated acrylic and filled with superfluid 4 He at ∼300-500 mK. The measuremen ...
... new experiment aiming at two orders of magnitude improvement (∼ 10−28 e·cm) over the current experimental upper limit has been proposed in the United States. In the experiment, the measurement cell will be made of dTPB-dPS coated acrylic and filled with superfluid 4 He at ∼300-500 mK. The measuremen ...
t - POLITesi
... resistance of the blades material, is enhanced by cooling the blades from inside. The air cooling systems currently used have already reached such a complexity level that a drastic increase of the TIT may be possible only by using better heat transfer fluids as coolants, in particular liquids. Due t ...
... resistance of the blades material, is enhanced by cooling the blades from inside. The air cooling systems currently used have already reached such a complexity level that a drastic increase of the TIT may be possible only by using better heat transfer fluids as coolants, in particular liquids. Due t ...
A toroidal momentum pinch velocity due to the Coriolis drift effect on
... and u ≡ RΩ/vth . Unless explicitly stated otherwise all quantities will be made dimensionless p using the major radius R, the thermal velocity vth ≡ 2T /mi , and the ion mass mi . Densities will be normalized with the electron density. The toroidal momentum flux is approximated by the flux of parall ...
... and u ≡ RΩ/vth . Unless explicitly stated otherwise all quantities will be made dimensionless p using the major radius R, the thermal velocity vth ≡ 2T /mi , and the ion mass mi . Densities will be normalized with the electron density. The toroidal momentum flux is approximated by the flux of parall ...
High-Temperature Superconductors. Overview
... type-II superconductors. Therefore, their properties and superconductivity mechanisms are considered in more detail. The term type-II superconductors was first introduced by Abrikosov in his classical paper [4], where he assumed a detailed phenomenological theory of these materials’ behavior, based ...
... type-II superconductors. Therefore, their properties and superconductivity mechanisms are considered in more detail. The term type-II superconductors was first introduced by Abrikosov in his classical paper [4], where he assumed a detailed phenomenological theory of these materials’ behavior, based ...
pdf
... interference which is well described by the model which we develop. When we address only a velocity subset of the thermal sample, however, the contrast is enhanced and deviates from this model. In a second experiment we measure the coherence of a diatomic molecular gas, as well as the atomic Bose-Ei ...
... interference which is well described by the model which we develop. When we address only a velocity subset of the thermal sample, however, the contrast is enhanced and deviates from this model. In a second experiment we measure the coherence of a diatomic molecular gas, as well as the atomic Bose-Ei ...
pdf on smart materials.pdf
... across a heavy ionic lattice. The electrons are constantly colliding with the ions in the lattice, and during each collision some of the energy carried by the current is absorbed by the lattice and converted into heat, which is essentially the vibrational kinetic energy of the lattice ions. As a res ...
... across a heavy ionic lattice. The electrons are constantly colliding with the ions in the lattice, and during each collision some of the energy carried by the current is absorbed by the lattice and converted into heat, which is essentially the vibrational kinetic energy of the lattice ions. As a res ...
One-dimensional Mott localization of quantum vortices in Josephson-junction arrays
... m v 5F 20 C/(2a 2 ), where a is the lattice constant of the array. The magnetic field applied perpendicular to the plane of an array plays the role of the chemical potential, which determines the density of vortices. The great advantage of a Josephson-junction array is that both the critical current ...
... m v 5F 20 C/(2a 2 ), where a is the lattice constant of the array. The magnetic field applied perpendicular to the plane of an array plays the role of the chemical potential, which determines the density of vortices. The great advantage of a Josephson-junction array is that both the critical current ...
application of densitometers to liquid measurement
... made by the field instrument and a laboratory instrument. A number of problems exist for the technician trying to validate meters and get good correlation with the laboratory these include: loss of light end fluids during sampling, difference in measurement conditions between the field and the labo ...
... made by the field instrument and a laboratory instrument. A number of problems exist for the technician trying to validate meters and get good correlation with the laboratory these include: loss of light end fluids during sampling, difference in measurement conditions between the field and the labo ...
Temperature Dependence of Viscosity and Density of cis-1,4/trans
... is however many orders of magnitude smaller than η at the glass transition temperature, Tg .3 The deviation from a thermally activated (Arrhenius-) behaviour of η somewhat above 126 K, which is demonstrated by the fact that a VTF-term is required to adequately fit the temperature dependence, shows t ...
... is however many orders of magnitude smaller than η at the glass transition temperature, Tg .3 The deviation from a thermally activated (Arrhenius-) behaviour of η somewhat above 126 K, which is demonstrated by the fact that a VTF-term is required to adequately fit the temperature dependence, shows t ...
Sample pages 1 PDF
... pressure, z is the vorticity vector, m is the dynamic viscosity, U is the velocity vector, and F is the body force. Irrotational body forces (conservative body forces with single-valued force potential), present in many fluid dynamic problems, do not produce circulation. Thus, the effects of the bod ...
... pressure, z is the vorticity vector, m is the dynamic viscosity, U is the velocity vector, and F is the body force. Irrotational body forces (conservative body forces with single-valued force potential), present in many fluid dynamic problems, do not produce circulation. Thus, the effects of the bod ...
Low temperature London penetration depth and superfluid density
... phenomenon was lacking until key experiments found isotope substitution effect on superconducting phase transition temperature Tc [4] and evidence for a superconducting energy gap [5]. These two experimental findings and a theoretical idea about pairing of electrons by even a weak attraction [6] led ...
... phenomenon was lacking until key experiments found isotope substitution effect on superconducting phase transition temperature Tc [4] and evidence for a superconducting energy gap [5]. These two experimental findings and a theoretical idea about pairing of electrons by even a weak attraction [6] led ...
Pair Correlations from Symmetry-Broken States in Strongly
... analytical approaches to this quantity. We present an approach that is based on an energy expansion view of an angular distortion of the charge vector field. We discuss this approach by comparing the numerical GA results with exact QMC results where our approach turned out to be in good qualitative ...
... analytical approaches to this quantity. We present an approach that is based on an energy expansion view of an angular distortion of the charge vector field. We discuss this approach by comparing the numerical GA results with exact QMC results where our approach turned out to be in good qualitative ...
On the Lamb Vector and the Hydrodynamic Charge
... discrete case too; see Tong & al. [14] for details. Discretization of the above equations leads to a sparse linear system for each potential. To guarantee unique solutions boundary conditions have to be specified. We follow Tong and choose the boundaries of the potentials to be zero. With this choic ...
... discrete case too; see Tong & al. [14] for details. Discretization of the above equations leads to a sparse linear system for each potential. To guarantee unique solutions boundary conditions have to be specified. We follow Tong and choose the boundaries of the potentials to be zero. With this choic ...
Characteristic properties of two-dimensional superconductors close
... understanding of vortex physics in superconductors. All cuprate superconductors feature “copper oxide planes” as a common structural element, which is believed to dominate the superconducting properties. Thus, all high-Tc superconductors mentioned above can be viewed as parallel superconducting plan ...
... understanding of vortex physics in superconductors. All cuprate superconductors feature “copper oxide planes” as a common structural element, which is believed to dominate the superconducting properties. Thus, all high-Tc superconductors mentioned above can be viewed as parallel superconducting plan ...
Superfluid helium-4
A superfluid is a state of matter in which the matter behaves like a fluid with zero viscosity and zero entropy. The substance, which looks like a normal liquid, will flow without friction past any surface, which allows it to continue to circulate over obstructions and through pores in containers which hold it, subject only to its own inertia.Known as a major facet in the study of quantum hydrodynamics and macroscopic quantum phenomena, the superfluidity effect was discovered by Pyotr Kapitsa and John F. Allen, and Don Misener in 1937. It has since been described through phenomenological and microscopic theories. The formation of the superfluid is known to be related to the formation of a Bose–Einstein condensate. This is made obvious by the fact that superfluidity occurs in liquid helium-4 at far higher temperatures than it does in helium-3. Each atom of helium-4 is a boson particle, by virtue of its zero spin. Helium-3, however, is a fermion particle, which can form bosons only by pairing with itself at much lower temperatures, in a process similar to the electron pairing in superconductivity.In the 1950s, Hall and Vinen performed experiments establishing the existence of quantized vortex lines in superfluid helium. In the 1960s, Rayfield and Reif established the existence of quantized vortex rings. Packard has observed the intersection of vortex lines with the free surface of the fluid, and Avenel and Varoquaux have studied the Josephson effect in superfluid helium-4. In 2006 a group at the University of Maryland visualized quantized vortices by using small tracer particles of solid hydrogen.