Search results:
Found 13
Listing 1  10 of 13  << page >> 
Sort by

Choose an application
Charge transport and charge transfer (CT) capabilities of deoxyribonucleic acid (DNA) are investigated. A QM/MM multiscale framework is applied to calculate the CT capabilities of DNA under conditions resembling the experimental setup. The simulations are able to explain and predict the outcome of experiments and therefore make suggestions in advance. Based on the findings, suitable DNA sequences can be opted for the design of DNAbased devices as nanoscale electronic elements.
Choose an application
Quantum theory has been a subject of interpretational debates ever since its inception. The EinsteinPodolskyRosen paradox, the empirical violation of Bell’s inequalities, and recent activities to exploit quantum entanglement for technological innovation only exacerbate a longstanding philosophical debate. Despite nosignaling theorems and theories of decoherence, deeprooted conflicts between special relativistic principles and observed quantum correlations as well as between definite measurement outcomes and quantum theoretical superpositions persist.This collection of papers, first presented at an international symposium at the University of Bern in 2011, highlights some recent approaches to the old problems of a philosophy of quantum mechanics. The authors address the issues from a variety of perspectives, ranging from variations of causal theory and system theoretic interpretations of the observer to an empirical test of whether entanglement itself can be entangled. The essays demonstrate that the discussion about the foundations of quantum mechanics is as lively and interesting as ever.
MPRL  Edition Open Access  quantum mechanics  philosophy of science  history of science  nosignaling  decoherence  causality
Choose an application
More than a century after the beginning of the quantum revolution, historians continue to explore new facets in the history of quantum physics, and to reexamine some of its betterknown aspects. The thirteen papers collected in this volume, by authors from five continents, present central trends in the current study of quantum physics within its theoretical, experimental, philosophical, technological and social contexts. They discuss developments from the late nineteenth to the early twentyfirst century and go beyond the traditional focus on Europe and North America to include China and Japan, and beyond the Heisenbergs and Diracs to reveal the role of actors who hitherto have played only a marginal role in historical account, but left their mark on the development of quantum physics. Also a wider array of subdisciplines comes into view, from optics to quantum gravity through quantum electrodynamics, from atomic and nuclear to condense matter physics and foundations of physics. Moreover, the volume shows that fields such as dispersion, physical chemistry and solid state physics should not be seen merely as areas of applications of ideas that evolved in other contexts, but should be regarded as birthplaces of important theoretical insights. The perspective of the papers ranges from local histories to global discussions, from conceptual changes via the role of experimentation to interactions with social and technological forces and to the interpretation of the theory.
MPRL  Edition Open Access  history of quantum physics  foundations of quantum physics  historical epistemology  old quantum theory  quantum mechanics
Choose an application
This book consists of the articles published in the special issues of this Symmetry journal based on twobytwo matrices and harmonic oscillators. The book also contains additional articles published by the guest editor in this Symmetry journal. They are of course based on harmonic oscillators and/or twobytwo matrices. The subject of symmetry is based on exactly soluble problems in physics, and the physical theory is not soluble unless it is based on oscillators and/or twobytwo matrices. The authors of those two special issues were aware of this environment when they submitted their articles. This book could therefore serve as an example to illustrate this important aspect of symmetry problems in physics.
Choose an application
The name of Joseph Fourier is also inseparable from the study of the mathematics of heat. Modern research on heat equations explores the extension of the classical diffusion equation on Riemannian, subRiemannian manifolds, and Lie groups. In parallel, in geometric mechanics, JeanMarie Souriau interpreted the temperature vector of Planck as a spacetime vector, obtaining, in this way, a phenomenological model of continuous media, which presents some interesting properties.
uncertainty relation  Wigner–Yanase–Dyson skew information  quantum memory  Born probability rule  quantumclassical relationship  spinors in quantum and classical physics  square integrable  energy quantization  Quantum HamiltonJacobi Formalism  quantum trajectory  generalized uncertainty principle  successive measurements  minimal observable length  Rényi entropy  Tsallis entropy  deep learning  quantum computing  neuromorphic computing  high performance computing  quantum mechanics  Gleason theorem  Kochen–Specker theorem  Born rule  quantum uncertainty  quantum foundations  quantum information  continuous variables  Bohmian dynamics  entanglement indicators  linear entropy  original Bell inequality  perfect correlation/anticorrelation  qudit states  quantum bound  measure of classicality  foundations of quantum mechanics  uncertainty relations  bell inequalities  entropy  quantum computing
Choose an application
Emergent quantum mechanics explores the possibility of an ontology for quantum mechanics. The resurgence of interest in ""deeperlevel"" theories for quantum phenomena challenges the standard, textbook interpretation. The book presents expert views that critically evaluate the significance—for 21st century physics—of ontological quantum mechanics, an approach that David Bohm helped pioneer. The possibility of a deterministic quantum theory was first introduced with the original de BroglieBohm theory, which has also been developed as Bohmian mechanics. The wide range of perspectives that were contributed to this book on the occasion of David Bohm’s centennial celebration provide ample evidence for the physical consistency of ontological quantum mechanics. The book addresses deeperlevel questions such as the following: Is reality intrinsically random or fundamentally interconnected? Is the universe local or nonlocal? Might a radically new conception of reality include a form of quantum causality or quantum ontology? What is the role of the experimenter agent? As the book demonstrates, the advancement of ‘quantum ontology’—as a scientific concept—marks a clear break with classical reality. The search for quantum reality entails unconventional causal structures and nonclassical ontology, which can be fully consistent with the known record of quantum observations in the laboratory.
quantum foundations  nonlocality  retrocausality  Bell’s theorem  Bohmian mechanics  quantum theory  surrealistic trajectories  Bell inequality  quantum mechanics  generalized Lagrangian paths  covariant quantum gravity  emergent spacetime  Gaussianlike solutions  entropy and time evolution  resonances in quantum systems  the Friedrichs model  complex entropy.  Bell’s theorem  the causal arrow of time  retrocausality  superdeterminism  toymodels  quantum ontology  subquantum dynamics  microconstituents  emergent spacetime  emergent quantum gravity  entropic gravity  black hole thermodynamics  SternGerlach  trajectories  spin  Bell theorem  fractal geometry  padic metric  singular limit  gravity  conspiracy  free will  number theory  quantum potential  Feynman paths  weak values  Bohm theory  nohiddenvariables theorems  observables  measurement problem  Bohmian mechanics  primitive ontology  Retrocausation  weak values  Stochastic Electrodynamics  quantum mechanics  decoherence  interpretations  pilotwave theory  Bohmian mechanics  Born rule statistics  measurement problem  quantum thermodynamics  strong coupling  operator thermodynamic functions  quantum theory  de Broglie–Bohm theory  contextuality  atomsurface scattering  bohmian mechanics  matterwave optics  diffraction  vortical dynamics  Schrödinger equation  de Broglie–Bohm theory  nonequilibrium thermodynamics  zeropoint field  de Broglie–Bohm interpretation of quantum mechanics  pilot wave  interiorboundary condition  ultraviolet divergence  quantum field theory  Aharonov–Bohm effect  physical ontology  nomology  interpretation  gauge freedom  Canonical Presentation  relational space  relational interpretation of quantum mechanics  measurement problem  nonlocality  discrete calculus  iterant  commutator  diffusion constant  LeviCivita connection  curvature tensor  constraints  Kilmister equation  Bianchi identity  stochastic differential equations  Monte Carlo simulations  Burgers equation  Langevin equation  fractional velocity  interpretations of quantum mechanics  David Bohm  mind–body problem  quantum holism  fundamental irreversibility  spacetime fluctuations  spontaneous state reduction  Poincaré recurrence  symplectic camel  quantum mechanics  Hamiltonian  molecule interference  matterwaves  metrology  magnetic deflectometry  photochemistry  past of the photon  Mach–Zehnder interferometer  Dove prism  photon trajectory  weak measurement  transition probability amplitude  atomic metastable states  Bell’s theorem  Bohmian mechanics  nonlocality  many interacting worlds  wavefunction nodes  bouncing oil droplets  stochastic quantum dynamics  de Broglie–Bohm theory  quantum nonequilibrium  Htheorem  ergodicity  ontological quantum mechanics  objective nonsignaling constraint  quantum inaccessibility  epistemic agent  emergent quantum state  selfreferential dynamics  dynamical chaos  computational irreducibility  undecidable dynamics  Turing incomputability  quantum ontology  nonlocality  timesymmetry  retrocausality  quantum causality  conscious agent  emergent quantum mechanics  Bohmian mechanics  de BroglieBohm theory
Choose an application
Quantum information has dramatically changed information science and technology, looking at the quantum nature of the information carrier as a resource for building new information protocols, designing radically new communication and computation algorithms, and ultrasensitive measurements in metrology, with a wealth of applications. From a fundamental perspective, this new discipline has led us to regard quantum theory itself as a special theory of information, and has opened routes for exploring solutions to the tension with general relativity, based, for example, on the holographic principle, on noncausal variations of the theory, or else on the powerful algorithm of the quantum cellular automaton, which has revealed new routes for exploring quantum fields theory, both as a new microscopic mechanism on the fundamental side, and as a tool for efficient physical quantum simulations for practical purposes. In this golden age of foundations, an astonishing number of new ideas, frameworks, and results, spawned by the quantum information theory experience, have revolutionized the way we think about the subject, with a new research community emerging worldwide, including scientists from computer science and mathematics.
reconstruction of quantum theory  entanglement  monogamy  quantum nonlocality  conserved informational charges  limited information  complementarity  characterization of unitary group and state spaces  algebraic quantum theory  C*algebra  gelfand duality  classical context  bohrification  process theory  classical limit  purity  higherorder interference  generalised probabilistic theories  Euclidean Jordan algebras  Pauli exclusion principle  quantum foundations  Xray spectroscopy  underground experiment  silicon drift detector  measurement uncertainty relations  relative entropy  position  momentum  quantum mechanics  the measurement problem  collapse models  Xrays  quantum gravity  discrete spacetime  causal sets  path summation  entropic gravity  physical computing models  complexity classes  causality  blind source separation (BSS)  qubit pair  exchange coupling  entangled pure state  unentanglement criterion  probabilities in quantum measurements  independence of random quantum sources  iterant  Clifford algebra  matrix algebra  braid group  Fermion  Dirac equation  quantum information  quantum computation  semiclassical physics  quantum control  quantum genetic algorithm  samplingbased learning control (SLC)  quantum foundations  relativity  quantum gravity  cluster states  multipartite entanglement  percolation  Shannon information  quantum information  quantum measurements  consistent histories  incompatible frameworks  single framework rule  probability theory  entropy  quantum relative entropy  quantum information  quantum mechanics  inference  quantum measurement  quantum estimation  macroscopic quantum measurement  quantum annealing  adiabatic quantum computing  hard problems  Hadamard matrix  binary optimization  reconstruction of quantum mechanics  conjugate systems  Jordan algebras  quantum correlations  Gaussian states  Gaussian unitary operations  continuousvariable systems  Wignerfriend experiment  nogo theorem  quantum foundations  interpretations of quantum mechanics  subsystem  agent  conservation of information  purification  group representations  commuting subalgebras  quantum walks  Hubbard model  Thirring model  quantum information  quantum foundations  quantum theory and gravity
Choose an application
This book presents the current views of leading physicists on the bizarre property of quantum theory: nonlocality. Einstein viewed this theory as “spooky action at a distance” which, together with randomness, resulted in him being unable to accept quantum theory. The contributions in the book describe, in detail, the bizarre aspects of nonlocality, such as Einstein–Podolsky–Rosen steering and quantum teleportation—a phenomenon which cannot be explained in the framework of classical physics, due its foundations in quantum entanglement. The contributions describe the role of nonlocality in the rapidly developing field of quantum information. Nonlocal quantum effects in various systems, from solidstate quantum devices to organic molecules in proteins, are discussed. The most surprising papers in this book challenge the concept of the nonlocality of Nature, and look for possible modifications, extensions, and new formulations—from retrocausality to novel types of multipleworld theories. These attempts have not yet been fully successful, but they provide hope for modifying quantum theory according to Einstein’s vision.
quantum nonlocality  quantum mechanics  Stern–Gerlach experiment  quantum measurement  pre and postselected systems  retrocausal channel  channel capacity  channel entropy  axioms for quantum theory  PR box  nonlocal correlations  classical limit  retrocausality  quantum correlations  quantum bounds  nonlocality  tsallis entropy  ion channels  selectivity filter  quantum mechanics  nonlinear Schrödinger model  biological quantum decoherence  nonlocality  parity measurements  entanglement  pigeonhole principle  controlledNOT  semiconductor nanodevices  quantum transport  densitymatrix formalism  Wignerfunction simulations  nonlocal dissipation models  steering  entropic uncertainty relation  general entropies  Bell’s theorem  Einstein–Podolsky–Rosen argument  local hidden variables  local realism  nosignalling  parallel lives  local polytope  quantum nonlocality  communication complexity  optimization  KS Box  PR Box  Noncontextuality inequality  discretevariable states  continuousvariable states  quantum teleportation of unknown qubit  hybrid entanglement  collapse of the quantum state  quantum nonlocality  communication complexity  quantum nonlocality  Bell test  deviceindependent  pvalue  hypothesis testing  nonsignaling  EPR steering  quantum correlation  nonlocality  entanglement  uncertainty relations  nonlocality  entanglement  quantum
Choose an application
The development of special and general relativity has relied significantly on ideas of symmetry. Similarly, modern efforts to test these theories have often sought either violations or extensions of the symmetries seen, and symmetry is regularly used a tool in seeking new applications. In this Special Issue of symmetry, we explore some contemporary research related to symmetry in special and general relativity.
Lorentz symmetry  rotation invariance  StandardModel Extension  Noether’s theorem  Weyl method  Palais principle of symmetric criticality  solutions to Einstein’s equations  magnetic monopole  pulsar timing  StandardModel Extension  binary pulsars  Lorentz and CPT violation  StandardModel Extension  Dirac fermions  Dirac neutrinos  Majorana neutrinos  determinants of block matrices  lorentz violation  CPT violation  penning trap  quantum mechanics  antimatter  interferometry  gravitational waves  Lorentz violation  standardmodel extension  geodesic deviation  Lorentz violation  standard model extension  CPT violation
Choose an application
This third open access volume of the handbook series deals with accelerator physics, design, technology and operations, as well as with beam optics, dynamics and diagnostics. A joint CERNSpringer initiative, the “Particle Physics Reference Library” provides revised and updated contributions based on previously published material in the wellknown LandoltBoernstein series on particle physics, accelerators and detectors (volumes 21A,B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Particle Acceleration and Detection, Beam Physics  Measurement Science and Instrumentation  Elementary Particles, Quantum Field Theory  Nuclear Physics, Heavy Ions, Hadrons  Accelerator Physics  Nuclear Physics  Physics of particle detectors  beam optics  accelerator diagnostics  Highenergy physics handbook  beam diagnostics  Accelerators and beams  Standard model of particle physics  Fundamental particles and forces  Accelerator design  Open Access  Particle & highenergy physics  Scientific standards, measurement etc  Quantum physics (quantum mechanics & quantum field theory)  Atomic & molecular physics
Listing 1  10 of 13  << page >> 
Sort by
