- Philsci-Archive
... cases it took a month for the paper to get published: Dirac’s appeared January 1, Jordan’s January 18. 4 What Dirac and Jordan, independently of one another, had worked out and presented in these papers has come to be known as the Dirac-Jordan (statistical) transformation theory. 5 As Jordan wrote ...
... cases it took a month for the paper to get published: Dirac’s appeared January 1, Jordan’s January 18. 4 What Dirac and Jordan, independently of one another, had worked out and presented in these papers has come to be known as the Dirac-Jordan (statistical) transformation theory. 5 As Jordan wrote ...
Quantum field theory correlators at very short and very long distances
... On tiny scales, spacetime looks like Minkowski spacetime. Therefore, questions related to the nature of elementary particles (especially to collider-type experiments) can be dealt with in the framework of this special background ...
... On tiny scales, spacetime looks like Minkowski spacetime. Therefore, questions related to the nature of elementary particles (especially to collider-type experiments) can be dealt with in the framework of this special background ...
8.5 Collisions 8 Momentum
... External forces may have an effect after the collision: • Billiard balls encounter friction with the table and the air. • After a collision of two trucks, the combined wreck slides along the pavement and friction decreases its momentum. • Two space vehicles docking in orbit have the same net momentu ...
... External forces may have an effect after the collision: • Billiard balls encounter friction with the table and the air. • After a collision of two trucks, the combined wreck slides along the pavement and friction decreases its momentum. • Two space vehicles docking in orbit have the same net momentu ...
momentum - Mrs. Brenner`s Biology
... are internal forces; that is, there are no forces acting on the system by objects outside of it. • When the net external force on a closed system is zero, the system is described as an isolated system. ...
... are internal forces; that is, there are no forces acting on the system by objects outside of it. • When the net external force on a closed system is zero, the system is described as an isolated system. ...
Electron Fluxes During Chemical Processes - diss.fu
... The monograph at hand addresses the concept of the mechanism of a chemical reaction. This concept is one of the pillars on which the field of chemistry rests, and it is used with self-evidence to predict or rationalize the outcome of reactions. Yet, from the quantum dynamicist’s point of view the th ...
... The monograph at hand addresses the concept of the mechanism of a chemical reaction. This concept is one of the pillars on which the field of chemistry rests, and it is used with self-evidence to predict or rationalize the outcome of reactions. Yet, from the quantum dynamicist’s point of view the th ...
ARMON STRUCTURE OF THE UNIVERSE
... theory of gravitation and the development of microphysics but also from the general logic of historical development of scientific ideas about the World. It is a question of the regularities noticed long time ago in the course of historical development of cosmological ideas, and of the consequences ...
... theory of gravitation and the development of microphysics but also from the general logic of historical development of scientific ideas about the World. It is a question of the regularities noticed long time ago in the course of historical development of cosmological ideas, and of the consequences ...
Completeness and the zx-calculus
... this perspective, matrix mechanics is like assembly language, one of the earliest programming languages: it is good for controlling all the details of a problem, but for complicated ...
... this perspective, matrix mechanics is like assembly language, one of the earliest programming languages: it is good for controlling all the details of a problem, but for complicated ...
Relativistic effects in atomic and molecular properties
... Until the seventies of the 20th century it was generally accepted that for a description of the electronic structure of atoms and molecules and, therefore, for the whole chemistry and for the substantial part of physics, relativistic theory is not needed. According to Sheldon L. Glashow [1], Nobel P ...
... Until the seventies of the 20th century it was generally accepted that for a description of the electronic structure of atoms and molecules and, therefore, for the whole chemistry and for the substantial part of physics, relativistic theory is not needed. According to Sheldon L. Glashow [1], Nobel P ...
On disorder effects in topological insulators and semimetals
... a single ballistic transport channel propagating in each direction. Further, it was ...
... a single ballistic transport channel propagating in each direction. Further, it was ...
Spin-Orbital Order Modified by Orbital Dilution in Transition Metal
... We investigate the changes in spin and orbital patterns induced by magnetic transition metal ions without an orbital degree of freedom doped in a strongly correlated insulator with spin-orbital order. In this context we study the 3d ion substitution in 4d transition metal oxides in the case of 3d3 d ...
... We investigate the changes in spin and orbital patterns induced by magnetic transition metal ions without an orbital degree of freedom doped in a strongly correlated insulator with spin-orbital order. In this context we study the 3d ion substitution in 4d transition metal oxides in the case of 3d3 d ...
Preprint
... What does a trapped Bose-Einstein condensate look like? More precisely, how does it interact with light, and does this differ fundamentally from what one would naively expect from a similar collection of very cold atoms? In the early 1990s, before Bose-Einstein condensation was realized in atomic ga ...
... What does a trapped Bose-Einstein condensate look like? More precisely, how does it interact with light, and does this differ fundamentally from what one would naively expect from a similar collection of very cold atoms? In the early 1990s, before Bose-Einstein condensation was realized in atomic ga ...
Quantum Information Processing - wolfgang
... Quantum information processing is one of the most fascinating and active fields of contemporary physics. Its central topic is the coherent control of quantum states in order to perform tasks — like quantum teleportation, absolutely secure data transmission and efficient factorization of large intege ...
... Quantum information processing is one of the most fascinating and active fields of contemporary physics. Its central topic is the coherent control of quantum states in order to perform tasks — like quantum teleportation, absolutely secure data transmission and efficient factorization of large intege ...
Paper
... we would not have dared to ask Nature for such an ideal system. Before the discovery of Feshbach resonances, suggestions to realize fermionic superfluidity focused on lithium because of the unusually large and negative triplet scattering length [12, 13, 14]. However, a major concern was whether the ...
... we would not have dared to ask Nature for such an ideal system. Before the discovery of Feshbach resonances, suggestions to realize fermionic superfluidity focused on lithium because of the unusually large and negative triplet scattering length [12, 13, 14]. However, a major concern was whether the ...
Renormalization group
In theoretical physics, the renormalization group (RG) refers to a mathematical apparatus that allows systematic investigation of the changes of a physical system as viewed at different distance scales. In particle physics, it reflects the changes in the underlying force laws (codified in a quantum field theory) as the energy scale at which physical processes occur varies, energy/momentum and resolution distance scales being effectively conjugate under the uncertainty principle (cf. Compton wavelength).A change in scale is called a ""scale transformation"". The renormalization group is intimately related to ""scale invariance"" and ""conformal invariance"", symmetries in which a system appears the same at all scales (so-called self-similarity). (However, note that scale transformations are included in conformal transformations, in general: the latter including additional symmetry generators associated with special conformal transformations.)As the scale varies, it is as if one is changing the magnifying power of a notional microscope viewing the system. In so-called renormalizable theories, the system at one scale will generally be seen to consist of self-similar copies of itself when viewed at a smaller scale, with different parameters describing the components of the system. The components, or fundamental variables, may relate to atoms, elementary particles, atomic spins, etc. The parameters of the theory typically describe the interactions of the components. These may be variable ""couplings"" which measure the strength of various forces, or mass parameters themselves. The components themselves may appear to be composed of more of the self-same components as one goes to shorter distances.For example, in quantum electrodynamics (QED), an electron appears to be composed of electrons, positrons (anti-electrons) and photons, as one views it at higher resolution, at very short distances. The electron at such short distances has a slightly different electric charge than does the ""dressed electron"" seen at large distances, and this change, or ""running,"" in the value of the electric charge is determined by the renormalization group equation.