density matrix

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• Density matrix — Mixed state redirects here. For the psychiatric condition, see Mixed state (psychiatry). In quantum mechanics, a density matrix is a self adjoint (or Hermitian) positive semidefinite matrix (possibly infinite dimensional) of trace one, that… …   Wikipedia

• density matrix — tankio matrica statusas T sritis fizika atitikmenys: angl. density matrix vok. Dichtematrix, f rus. матрица плотности, f pranc. matrice de densité, f …   Fizikos terminų žodynas

• Density matrix renormalization group — The density matrix renormalization group (DMRG) is a numerical variational technique devised to obtain the low energy physics of quantum many body systems with high accuracy. It was invented in 1992 by Steven R. White and it is nowadays the most… …   Wikipedia

• Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… …   Wikipedia

• Matrix metallopeptidase 13 — (collagenase 3) PDB rendering based on 1cxv …   Wikipedia

• Matrix normal distribution — parameters: mean row covariance column covariance. Parameters are matrices (all of them). support: is a matrix …   Wikipedia

• Density logging — Well logging Gamma ray logging Spontaneous potential logging Resistivity logging Density logging Sonic logging Caliper logging Mud logging LWD/MWD v · …   Wikipedia

• Matrix-assisted laser desorption/ionization — MALDI TOF mass spectrometer Matrix assisted laser desorption/ionization (MALDI) is a soft ionization technique used in mass spectrometry, allowing the analysis of biomolecules (biopolymers such as DNA, proteins, peptides and sugars) and large… …   Wikipedia

• matrix — 1. [NA] The formative portion of a tooth or a nail. 2. The intercellular substance of a tissue. 3. A surrounding substance within which something is contained or embedded, e.g., the fatty tissue in which blood vessel s or …   Medical dictionary

• matrix — n. 1) (in histology) the substance of a tissue or organ in which more specialized structures are embedded; for example, the ground substance (extracellular matrix) of connective tissue. 2) (in radiology) the division of an image into rows and… …   The new mediacal dictionary

• Square root of a matrix — In mathematics, the square root of a matrix extends the notion of square root from numbers to matrices. A matrix B is said to be a square root of A if the matrix product B · B is equal to A.[1] Contents 1 Properties 2 Computation methods …   Wikipedia