spin singlet

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• Singlet oxygen — is the common name used for the two metastable states of molecular oxygen (O2) with higher energy than the ground state triplet oxygen [cite journal title = Physical and chemical properties of singlet molecular oxygen author = David R. Kearns… …   Wikipedia

• Spin isomers of hydrogen — Spin Isomers of Molecular Hydrogen Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).[1] At room temperature… …   Wikipedia

• Singlet — may refer to: * singlet state, in theoretical physics, a quantum state with zero spin * in spectroscopy, an entity appearing as a single peak; see NMR spectroscopy * in optics, a single lens element, the building blocks of lens systems; see lens… …   Wikipedia

• Singlet state — In theoretical physics, a singlet usually refers to a one dimensional representation (e.g. a particle with vanishing spin). It may also refer to two or more particles prepared in a correlated state, such that the total angular momentum of the… …   Wikipedia

• Spin multiplicity — In quantum mechanics, spin multiplicity denotes the number of possible quantum states of a system with given principal spin quantum number S. The different states are distinguished by the spin projection quantum number Sz, which can take the… …   Wikipedia

• Spin contamination — In computational chemistry, spin contamination is the artificial mixing of different electronic spin states. This can occur when an approximate orbital based wave function is represented in an unrestricted form – that is, when the spatial parts… …   Wikipedia

• singlet state — the excited state occurring when one electron of a pair is excited to a higher energy level without changing its spin; it is unstable and can decay to either a ground state or a triplet state …   Medical dictionary

• singlet — noun 1》 chiefly Brit. a vest or similar sleeveless garment. 2》 Physics a single line in a spectrum, not part of a multiplet. 3》 Physics a state or energy level with zero spin, giving a single value for a particular quantum number. Origin C18… …   English new terms dictionary

• Deuterium — Hydrogen 2 Full table General Name, symbol deuterium, 2H or D Neutrons 1 …   Wikipedia

• EPR paradox — In quantum mechanics, the EPR paradox is a thought experiment which challenged long held ideas about the relation between the observed values of physical quantities and the values that can be accounted for by a physical theory. EPR stands for… …   Wikipedia

• Bell's theorem — is a theorem that shows that the predictions of quantum mechanics (QM) are not intuitive, and touches upon fundamental philosophical issues that relate to modern physics. It is the most famous legacy of the late physicist John S. Bell. Bell s… …   Wikipedia