The Immirzi parameter is a constant that arises in the context of loop quantum gravity, a theoretical framework aimed at unifying general relativity and quantum mechanics. It is named after the physicist Barbero-Immirzi, who introduced it in the context of loop quantum gravity to address issues related to black hole entropy. In loop quantum gravity, the geometry of space is quantized, and the Immirzi parameter plays a significant role in the definition of the quantum states of the gravitational field.
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