Feynman, Einstein and Quantum Computing
... Simulating Physics with Computers • Can a universal classical computer simulate physics exactly? • Can a classical computer efficiently simulate quantum mechanics? • ”I’m not happy with all the analyses that go with just classical theory, because Nature isn’t classical, dammit, and if you want to ...
... Simulating Physics with Computers • Can a universal classical computer simulate physics exactly? • Can a classical computer efficiently simulate quantum mechanics? • ”I’m not happy with all the analyses that go with just classical theory, because Nature isn’t classical, dammit, and if you want to ...
Path-integral Monte Carlo calculation of the kinetic energy of
... in this temperature and density range, the distribution function of lithium differs only slightly from the one we obtained within PIMC for a system of particles at the same density and temperature but a 100 times heavier mass. The perturbative results are very close to the PIMC values with a discrep ...
... in this temperature and density range, the distribution function of lithium differs only slightly from the one we obtained within PIMC for a system of particles at the same density and temperature but a 100 times heavier mass. The perturbative results are very close to the PIMC values with a discrep ...
PHYSICS VS. SEMANTICS: A PUZZLING CASE
... and (2). That GRW does satisfy (2) is fairly obvious, since that theory proposes addition of nonlinear terms to the Schrödinger equation. It seems also clear that with a higher degree of technological sophistication, we could discern effects of those nonlinearity,(15,16,53,55) thus justifying invok ...
... and (2). That GRW does satisfy (2) is fairly obvious, since that theory proposes addition of nonlinear terms to the Schrödinger equation. It seems also clear that with a higher degree of technological sophistication, we could discern effects of those nonlinearity,(15,16,53,55) thus justifying invok ...
How to test the “quantumness” of a quantum computer?
... The looming impossibility to predict the behaviour of any big enough quantum processor (adiabatic, gate-based, etc) and even to test it for “quantumness” using classical tools, is the elephant in the room, and it may effectively restrict any further progress. Even taking the optimistic view, that qu ...
... The looming impossibility to predict the behaviour of any big enough quantum processor (adiabatic, gate-based, etc) and even to test it for “quantumness” using classical tools, is the elephant in the room, and it may effectively restrict any further progress. Even taking the optimistic view, that qu ...
fn1_1h_qm2_cr
... Quantum Mechanics I don't like it, and I'm sorry I ever had anything to do with it. -- Erwin Schrodinger talking about Quantum Physics FNI 1H Quantum Mechanics ...
... Quantum Mechanics I don't like it, and I'm sorry I ever had anything to do with it. -- Erwin Schrodinger talking about Quantum Physics FNI 1H Quantum Mechanics ...
Detection and Quantized Conductance of Neutral Atoms Near a Charged... Trygve Ristroph, Anne Goodsell, J. A. Golovchenko, and Lene Vestergaard...
... for a neutral polarizable particle system. An alternative technique to measure the quantized conductance of neutral particles has been proposed [16], but at this time the effect has been observed only for two-dimensional Fermi electron gases in solid-state quantum devices [17]. A related effect has ...
... for a neutral polarizable particle system. An alternative technique to measure the quantized conductance of neutral particles has been proposed [16], but at this time the effect has been observed only for two-dimensional Fermi electron gases in solid-state quantum devices [17]. A related effect has ...
Document
... Many teachers and textbooks treat congruence as “same size, same shape”. This is not sufficient to transition from middle school to high school geometry. The key to grade specific rigor (informal to increased formalism) in CCSS is the transformational approach. Transformations (rigid motions + dilat ...
... Many teachers and textbooks treat congruence as “same size, same shape”. This is not sufficient to transition from middle school to high school geometry. The key to grade specific rigor (informal to increased formalism) in CCSS is the transformational approach. Transformations (rigid motions + dilat ...
Quantum Mechanics - Sakshieducation.com
... mathematical reformation using a wave function associated with matter waves needed such a mathematical formation known as wave mechanics or quantum mechanics was developed in 1926 by Schrodinger. Schrodinger described the amplitude of matter waves by a complex quantity ψ ( x, y , z , t ) known as wa ...
... mathematical reformation using a wave function associated with matter waves needed such a mathematical formation known as wave mechanics or quantum mechanics was developed in 1926 by Schrodinger. Schrodinger described the amplitude of matter waves by a complex quantity ψ ( x, y , z , t ) known as wa ...
Nuclear Physics I (PHY 551)
... Nuclear Physics – History (2) Ernest Rutherford – “the father of nuclear physics” § 1899: Rutherford shows 2 types of radiation exits and calls them named α and β. § 1900: Villard gives evidence for a 3rd type of radiation coming from radium and calls it γ § 1902: Curies show that β radiation ...
... Nuclear Physics – History (2) Ernest Rutherford – “the father of nuclear physics” § 1899: Rutherford shows 2 types of radiation exits and calls them named α and β. § 1900: Villard gives evidence for a 3rd type of radiation coming from radium and calls it γ § 1902: Curies show that β radiation ...
Quantum Information S. Lloyd
... atoms to photons, transported through space, and moved back from photons to atoms, is a difficult one. Exactly because quantum information provides additional opportunities for storing and processing information, it also provides additional opportunities for errors, loss, and the corruption of that ...
... atoms to photons, transported through space, and moved back from photons to atoms, is a difficult one. Exactly because quantum information provides additional opportunities for storing and processing information, it also provides additional opportunities for errors, loss, and the corruption of that ...
Rational Quantum Physics R. N. Boyd, Ph. D., USA “There is good
... know, "What substance are these flow-lines composed of?" Henry and Faraday had the notions that, since force lines were made of a "flowing charge substance", then there must be some means of placing contacts on charged masses to obtain electrical power forever. Later, Tesla, Stubblefield, T. T. Brow ...
... know, "What substance are these flow-lines composed of?" Henry and Faraday had the notions that, since force lines were made of a "flowing charge substance", then there must be some means of placing contacts on charged masses to obtain electrical power forever. Later, Tesla, Stubblefield, T. T. Brow ...
Quantum Field Theory on Curved Backgrounds. I
... field theory on certain curved backgrounds. We focus on generalizing Osterwalder Schrader quantization, as these methods have proved useful to establish estimates for interacting fields on flat space-times. In this picture, a static Killing vector generates translations in Euclidean time, and physic ...
... field theory on certain curved backgrounds. We focus on generalizing Osterwalder Schrader quantization, as these methods have proved useful to establish estimates for interacting fields on flat space-times. In this picture, a static Killing vector generates translations in Euclidean time, and physic ...
titles and abstracts
... coordinates of events as random variables. Our approach leads to a precise definition of tunneling times, valid also for relativistic systems, and to an explicit quantitative description of the mechanism through which quantum field theory enforces causality in quantum tunneling. Daniel Bedingham (Im ...
... coordinates of events as random variables. Our approach leads to a precise definition of tunneling times, valid also for relativistic systems, and to an explicit quantitative description of the mechanism through which quantum field theory enforces causality in quantum tunneling. Daniel Bedingham (Im ...
Source
... The object “Species” represents a placeholder for a whole new model to represent the atomic and molecular properties of matter. This will take form in a separate document. We reserve here one single attribute for the time being, the name of the species (including standard naming convention for ioni ...
... The object “Species” represents a placeholder for a whole new model to represent the atomic and molecular properties of matter. This will take form in a separate document. We reserve here one single attribute for the time being, the name of the species (including standard naming convention for ioni ...
Entanglement Entropy at Infinite-Randomness Fixed Points in Higher Dimensions Yu-Cheng Lin,
... Extensive studies have been devoted recently to understanding ground state entanglement in quantum manybody systems [1]. In particular, the behavior of various entanglement measures at or near quantum phase transitions has been of special interest. One of the widely used entanglement measures is the ...
... Extensive studies have been devoted recently to understanding ground state entanglement in quantum manybody systems [1]. In particular, the behavior of various entanglement measures at or near quantum phase transitions has been of special interest. One of the widely used entanglement measures is the ...
1.4 Particle physics - McMaster Physics and Astronomy
... of the Lagrangian, i.e. a transformation of the generalized coordinates that leaves the Lagrangian unchanged, results in di↵erent observers seeing the same equations of motion. In quantum mechanics we see through the path integral that a symmetry of the Lagrangian results in di↵erent observers seein ...
... of the Lagrangian, i.e. a transformation of the generalized coordinates that leaves the Lagrangian unchanged, results in di↵erent observers seeing the same equations of motion. In quantum mechanics we see through the path integral that a symmetry of the Lagrangian results in di↵erent observers seein ...
Presentations\Quantum Well Structures and Fabrications Rev 1
... a crystallographic relationship between substrate and the film. • Creating quantum wells like this is often expensive but highly accurate. • The process is often carried out in a vacuum and uses multiple alloys to grow the alloy films. [3] • Elements are heated until they are gaseous and then conden ...
... a crystallographic relationship between substrate and the film. • Creating quantum wells like this is often expensive but highly accurate. • The process is often carried out in a vacuum and uses multiple alloys to grow the alloy films. [3] • Elements are heated until they are gaseous and then conden ...
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.