Examples of using Metric tensor in English and their translations into Turkish
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A metric tensor describes the geometry of spacetime.
The geodesic paths for a spacetime are calculated from the metric tensor.
Thus the metric tensor gives the infinitesimal distance on the manifold.
The solutions of the field equations are the components of the metric tensor of spacetime.
This formula for the metric tensor formula_1 is called the Kerr-Newman metric. .
The most familiar example is that of elementary Euclidean geometry:the two-dimensional Euclidean metric tensor.
This formula for the metric tensor g μ ν{\displaystyle g_{\mu\ nu}\!} is called the Kerr-Newman metric.
Here, formula_25 is"c" times the proper time of theparticle and formula_26 is the Minkowski metric tensor.
In general relativity, the metric tensor(or simply, the metric) is the fundamental object of study.
Introduction to the mathematics of general relativity Stress-energy tensor Metric tensor(general relativity) Peres, Asher 1959.
Here, τ{\displaystyle\tau} is c times the proper time of the particle and η{\displaystyle\eta}is the Minkowski metric tensor.
In the same way as a dot product, metric tensors are used to define the length of and angle between tangent vectors.
The study of these invariants of a surface ledGauss to introduce the predecessor of the modern notion of the metric tensor.
This description is a metric tensor at every point, or a connection which defines which nearby vectors are parallel.
In pseudo-Riemannian and Riemannian geometry the Levi-Civitaconnection is a special connection associated to the metric tensor.
Einstein realized that the overall distribution of matter would determine the metric tensor, which tells you which frame is rotationally stationary.
Due to its general covariance,Einstein's theory is not sufficient by itself to determine the time evolution of the metric tensor.
The dynamic variables of this theory are taken to be the metric tensor of three dimensional spatial slices formula_4 and their conjugate momenta formula_5.
The metric tensor that defines the geometry-in particular, how lengths and angles are measured-is not the Minkowski metric of special relativity, it is a generalization known as a semi- or pseudo-Riemannian metric. .
The Einstein field equations of general relativity can be derived by postulating the Einstein-Hilbert action to be the true action of spacetime andthen varying that action with respect to the metric tensor.
In general relativity the metric tensor symbolizes the gravitational potential, and Christoffel symbols of the spacetime manifold symbolize the gravitational force field.
These attempts initially concentrated on additional geometric notions such as vierbeins and"distant parallelism",but eventually centered around treating both the metric tensor and the affine connection as fundamental fields.
The dynamic variables of this theoryare taken to be the metric tensor of three dimensional spatial slices γ i j( t, x k){\displaystyle\gamma_{ij}(t, x^{k})} and their conjugate momenta π i j( t, x k){\displaystyle\pi^{ij}t, x^{k.
Stress-energy of a fluid in equilibrium===For a perfect fluid in thermodynamic equilibrium, the stress-energy tensor takes on a particularly simple form: formula_33where formula_34 is the mass-energy density(kilograms per cubic meter), formula_35 is the hydrostatic pressure(pascals), formula_36 is the fluid's four velocity,and formula_37 is the reciprocal of the metric tensor.
Mathematically, spacetime is represented by afour-dimensional differentiable manifold M{\displaystyle M} and the metric tensor is given as a covariant, second-degree, symmetric tensor on M{\displaystyle M}, conventionally denoted by g{\displaystyle g.
The Einstein field equations===In general relativity, the stress tensor is studied in the context of the Einstein field equations which are often written as: formula_23where formula_24 is the Ricci tensor, formula_25 is the Ricci scalar(the tensor contraction of the Ricci tensor), formula_26 the metric tensor, and formula_27 is the universal gravitational constant.
With the(-+++) metric signature, the gravitational part of the action is given as:formula_1where formula_2 is the determinant of the metric tensor, formula_3 is the Ricci scalar, and formula_4, where formula_5 is Newton's gravitational constant and formula_6 is the speed of light in a vacuum.
These efforts, along with those of Rudolf Förster, involved making the metric tensor(which had previously been assumed to be symmetric and real-valued) into an asymmetric and/or complex-valued tensor, and they also attempted to create a field theory for matter as well.
In order to provide a complete solution of the Einstein-Maxwell Equations,the Kerr-Newman solution not only includes a formula for the metric tensor, but also a formula for the electromagnetic potential: :formula_16At large distances from the source(R» a), these equations reduce to the Reissner-Nordström metric with: :formula_17In the Kerr-Schild form of the Kerr-Newman metric, the determinant of the metric tensor is everywhere equal to negative one, even near the source.