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In physics, an infrared fixed point is a set of coupling constants, or other parameters, that evolve from initial values at very high energies (short distance) to fixed stable values, usually predictable, at low energies (large distance). This usually involves the use of the renormalization group, which specifically details the way parameters in a physical system (a quantum field theory) depend on the energy scale being probed.

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  • Punto fijo infrarrojo (es)
  • Infrared fixed point (en)
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  • In physics, an infrared fixed point is a set of coupling constants, or other parameters, that evolve from initial values at very high energies (short distance) to fixed stable values, usually predictable, at low energies (large distance). This usually involves the use of the renormalization group, which specifically details the way parameters in a physical system (a quantum field theory) depend on the energy scale being probed. (en)
  • En física, un punto fijo infrarrojo es un conjunto de constantes de acoplamientos u otros parámetros que evolucionan desde unos valores iniciales a muy altas energías (distancia corta) hacia otros estables, normalmente predecibles, a bajas energías (distancia larga). Esto requiere normalmente el uso de grupos de renormalización, una herramienta matemática para evolucionar sistemas de manera teórica de una escala a otra. (es)
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  • In physics, an infrared fixed point is a set of coupling constants, or other parameters, that evolve from initial values at very high energies (short distance) to fixed stable values, usually predictable, at low energies (large distance). This usually involves the use of the renormalization group, which specifically details the way parameters in a physical system (a quantum field theory) depend on the energy scale being probed. Conversely, if the length-scale decreases and the physical parameters approach fixed values, then we have ultraviolet fixed points. The fixed points are generally independent of the initial values of the parameters over a large range of the initial values. This is known as universality. (en)
  • En física, un punto fijo infrarrojo es un conjunto de constantes de acoplamientos u otros parámetros que evolucionan desde unos valores iniciales a muy altas energías (distancia corta) hacia otros estables, normalmente predecibles, a bajas energías (distancia larga). Esto requiere normalmente el uso de grupos de renormalización, una herramienta matemática para evolucionar sistemas de manera teórica de una escala a otra. Al contrario, si la longitud de escala decrece y los parámetros se acercan a valores fijos, tenemos entonces un . Estos puntos fijos son normalmente independientes de los valores iniciales de los parámetros a lo largo de un amplio rango de valores iniciales. A esto se le conoce como "universalidad". (es)
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