The Kalb-Ramond field is a theoretical construct in physics, specifically in the context of string theory and higher-dimensional field theories. It is a type of antisymmetric tensor field, typically denoted as \( B_{\mu\nu} \), where the indices \( \mu \) and \( \nu \) represent spacetime dimensions.
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The Kalb–Ramond field is an antisymmetric two-form background coupled to the oriented worldsheet area element. Its gauge-invariant field strength is the three-form .