Tags
A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.
Tensor calculus (tensor analysis) is a systematic extension of vector calculus to multivector and tensor fields in a form that is independent of the choice of coordinates on the relevant manifold, but…
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Use this for questions relating to the proper use of physics terminology or nomenclature.
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Term symbol are abbreviated descriptions of the (total) angular momentum quantum numbers in a multi-fermion system: atom, molecule, nucleus, meson. Each energy level of a composite system with a giv…
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For questions about possible specific errors in asker's reference material. PLEASE search for the relevant errata webpage before asking. DO NOT USE THE TAG for general critique beyond the scope of the…
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The thermal conductivity of a material is a measure of its ability to conduct heat.
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Thermal Field Theory or Finite Temperature Field Theory deals with of methods to calculate expectation values of physical observables of a Quantum Field Theory at finite temperature.
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The temperature-dependent emission of electromagnetic waves. Combine this tag with the [thermodynamics] tag for a macroscopic view or the [quantum-mechanics] tag for a microscopic explanation.
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Covers the study of (primarily homogeneous) macroscopic systems from a heat/energy/entropy point of view. Consider also using the tag: [statistical-mechanics].
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Hypothetical situation in which, for simplification, only some physical aspects are considered in order to further understand or reveal contradictions between the laws governing them.
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The force on parts of an extended body in a non-uniform gravitational field, due to residual gravitational attraction between the overall effect on the body and the expected effect on the point in que…
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Time is defined operationally to be that which is measured by clocks. The SI unit of time is the second, which is defined to be
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for questions regarding the 'time dilation' which is the lengthening of the time interval between two events for an observer in an inertial frame that is moving with respect to the rest fr…
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The quantum mechanical time evolution operator governs how observables and/or states evolve during finite time steps, and is always unitary. Use this tag for questions about the time evolution operato…
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The theoretical symmetry of physical laws under the transformation of time reversal, that is t -> -t.
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Time travel is the concept of moving between different points in time, often instigated by non-trivially topology of space-time, such as a wormhole. DO NOT USE THIS TAG for questions on changes of coo…
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Tomonaga-Luttinger liquid, more often referred to as simply a Luttinger liquid, is a theoretical model describing interacting electrons (or other fermions) in a one-dimensional conductor (e.g. quantum…
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for topological field theory (Tft) and topological string theory (tst) questions.
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Topological insulator are materials formed by an insulator bulk and metallic surfaces with topological origin. These materials may be important for developments in Quantum Computing and Spintronics.
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