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Elastic rod model of a supercoiled DNA molecule
... is 50 nm. Etwist is proportional to the square of the projection of the angular velocity along the molecular axis and gives the energy associated with a twist constraint. The twist rigidity C is known to be in the range 50 to 100 nm; its determination from the experimental measurement will be the to ...
... is 50 nm. Etwist is proportional to the square of the projection of the angular velocity along the molecular axis and gives the energy associated with a twist constraint. The twist rigidity C is known to be in the range 50 to 100 nm; its determination from the experimental measurement will be the to ...
PHY332 Atomic and Laser Physics AM FOX
... Atomic Physics is the subject that studies the inner workings of the atom. It remains one of the most important testing grounds for quantum theory, and is therefore a very area of active research, both for its contribution to fundamental physics and to technology. Furthermore, many other branches of ...
... Atomic Physics is the subject that studies the inner workings of the atom. It remains one of the most important testing grounds for quantum theory, and is therefore a very area of active research, both for its contribution to fundamental physics and to technology. Furthermore, many other branches of ...
Atom trapping and guiding with a subwavelength
... symmetric, that is, U depends on the radial distance r from the atom to the fiber axis z, but not on two other cylindrical coordinates and z. Due to this symmetry, the component Lz of the angular momentum of the atom is conserved. In the eigenstate problem, we have Lz = បm, where m is an integer, ...
... symmetric, that is, U depends on the radial distance r from the atom to the fiber axis z, but not on two other cylindrical coordinates and z. Due to this symmetry, the component Lz of the angular momentum of the atom is conserved. In the eigenstate problem, we have Lz = បm, where m is an integer, ...
Boundary condition for the distribution function of conduction
... In kinetic theory, the surface scattering of conducWe shall discuss a generalized electron collision tion electrons is usually taken into account by means integral that describes the contribution of surface scatof a boundary condition that relates the distribution tering to the quantum kinetic equat ...
... In kinetic theory, the surface scattering of conducWe shall discuss a generalized electron collision tion electrons is usually taken into account by means integral that describes the contribution of surface scatof a boundary condition that relates the distribution tering to the quantum kinetic equat ...
Quantum steam tables. Free energy calculations for H2O, D2O, H2S
... interest is studied at low temperature, an accurate calculation of the molecular zero-point energy for a small range of rotational excitation energies, and perhaps the excitation energies of a few low-frequency modes, may suffice to converge Eq. (4). However, if one needs to carry out calculations a ...
... interest is studied at low temperature, an accurate calculation of the molecular zero-point energy for a small range of rotational excitation energies, and perhaps the excitation energies of a few low-frequency modes, may suffice to converge Eq. (4). However, if one needs to carry out calculations a ...
A Bird`s-Eye View of Density
... This paper is the outgrowth of lectures the author gave at the Physics Institute and the Chemistry Institute of the University of São Paulo at São Carlos, Brazil, and at the VIII’th Summer School on Electronic Structure of the Brazilian Physical Society. It is an attempt to introduce density-funct ...
... This paper is the outgrowth of lectures the author gave at the Physics Institute and the Chemistry Institute of the University of São Paulo at São Carlos, Brazil, and at the VIII’th Summer School on Electronic Structure of the Brazilian Physical Society. It is an attempt to introduce density-funct ...
A Bird`s-Eye View of Density-Functional Theory
... One sometimes says that T̂ and Û are ‘universal’, while V̂ is systemdependent, or ‘nonuniversal’. We will come back to this terminology. A simple estimate of the computational complexity of this task is to imagine a real-space representation of Ψ on a mesh, in which each coordinate is discretized b ...
... One sometimes says that T̂ and Û are ‘universal’, while V̂ is systemdependent, or ‘nonuniversal’. We will come back to this terminology. A simple estimate of the computational complexity of this task is to imagine a real-space representation of Ψ on a mesh, in which each coordinate is discretized b ...
Schroedinger`s Model of Hydrogen Atom
... The hydrogen atom is the simplest atom. It has only one electron and the nucleus is a proton. It is therefore not surprising that it has been the test-bed for new theories. In this module, we will look at the attempts that have been made to understand the structure of the hydrogen atom1—1a structure ...
... The hydrogen atom is the simplest atom. It has only one electron and the nucleus is a proton. It is therefore not surprising that it has been the test-bed for new theories. In this module, we will look at the attempts that have been made to understand the structure of the hydrogen atom1—1a structure ...
Molecular structure calculations: A unified quantum
... Ref. 4, which also presents one of the central conceptual problems of molecular structure theory: the reconstruction of the classical molecular structure from a fully quantum mechanical description.4–19 Numerical contributions to this question can be found in Refs. 20–29. In recent work,25, 26 we in ...
... Ref. 4, which also presents one of the central conceptual problems of molecular structure theory: the reconstruction of the classical molecular structure from a fully quantum mechanical description.4–19 Numerical contributions to this question can be found in Refs. 20–29. In recent work,25, 26 we in ...
A summary on Solitons in Quantum field theory
... Finite energy solutions are crucial to understand the interplay between the topology of space-time and physical phenomena. It is very important to deepen our understanding of these kind of solutions because they might be useful in the discovery of new physical phenomena. The study of one (1+1)-dimen ...
... Finite energy solutions are crucial to understand the interplay between the topology of space-time and physical phenomena. It is very important to deepen our understanding of these kind of solutions because they might be useful in the discovery of new physical phenomena. The study of one (1+1)-dimen ...
Radiative cascade of highly excited hydrogen atoms in strong magnetic... Türker Topçu and Francis Robicheaux 兲
... magnetic quantum number m and the z parity rather than the principal quantum number n and the orbital quantum number l. As a check on our codes, we have compared our energies for hydrogenic n = 23 manifold in a 4.7 T field for states with m = 0 , 1 , 2 listed in Ref. 关14兴 and found very good agree ...
... magnetic quantum number m and the z parity rather than the principal quantum number n and the orbital quantum number l. As a check on our codes, we have compared our energies for hydrogenic n = 23 manifold in a 4.7 T field for states with m = 0 , 1 , 2 listed in Ref. 关14兴 and found very good agree ...
Magnetic-field switchable metal-insulator transitions in a quasihelical conductor Bernd Braunecker, Anders Str¨om,
... ±q0 (Fig. 1, dashed lines). A magnetic field Bx perpendicular to the ↑,↓ axis has now two effects. It lifts the degeneracy at k = 0 by opening a pseudogap (Fig. 1, solid lines), and it breaks time-reversal symmetry. Tuning the Fermi level to the center of the pseudogap by letting kF = q0 allows cond ...
... ±q0 (Fig. 1, dashed lines). A magnetic field Bx perpendicular to the ↑,↓ axis has now two effects. It lifts the degeneracy at k = 0 by opening a pseudogap (Fig. 1, solid lines), and it breaks time-reversal symmetry. Tuning the Fermi level to the center of the pseudogap by letting kF = q0 allows cond ...
Enhanced and Reduced Atom Number
... optimum should exist between very short r creating excitations in the BEC and/or not leaving sufficient time for tunneling, and very long r where heating and atom loss become important. For a quantitative analysis, we start by noting that low-energy excitations from the symmetric many-particle gro ...
... optimum should exist between very short r creating excitations in the BEC and/or not leaving sufficient time for tunneling, and very long r where heating and atom loss become important. For a quantitative analysis, we start by noting that low-energy excitations from the symmetric many-particle gro ...
Quantum Statistical Response Functions
... will have to treat which are absent in the description of the groundstate properties of isolated molecules. • We will have to decide how to describe a quantum system statistically rather than by specifying its wavefunction. • We will have to describe the time dependent interaction with the external ...
... will have to treat which are absent in the description of the groundstate properties of isolated molecules. • We will have to decide how to describe a quantum system statistically rather than by specifying its wavefunction. • We will have to describe the time dependent interaction with the external ...
Supersymmetric Quantum Mechanics - Uwe
... the two potentials have the same dependence in the variable and may only differ in other parameters. For potentials which satisfy this condition we can solve the energy spectrum as well as the eigenfunctions analytically. We may also calculate reflection and transmission coefficients algebraically. ...
... the two potentials have the same dependence in the variable and may only differ in other parameters. For potentials which satisfy this condition we can solve the energy spectrum as well as the eigenfunctions analytically. We may also calculate reflection and transmission coefficients algebraically. ...