Retrieving "Lorentz Invariance" from the archives

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1. Goldstone Bosons

   Linked via "Lorentz invariance"

   Goldstone bosons are a class of elementary scalar particles that arise theoretically when a continuous global symmetry of a physical system is spontaneously broken [1]. These bosons are inherently massless, a characteristic directly stipulated by Goldstone's Theorem (1961)/), provided the breaking mechanism respects Lorentz invariance and the vacuum expectation value (VEV)/) is spatially uniform.
   Theoretical Derivation a…

2. Quantum Gravity Citation 6

   Linked via "Lorentz invariance"

   Implications for Unification
   The constraints derived from dispersion measurements place severe restrictions on the parameter space of candidate quantum gravity theories. Theories requiring significant modification of the vacuum structure at energies approaching $10^{10} \text{ GeV}$—such as certain non-commutative geometry extensions—are increasingly difficult to reconcile with the near-perfect Lorentz invariance observed in hig…