论文标题
通过应用非本地场重新定义来庞大到无质量
Massive to Massless by Applying a Nonlocal Field Redefinition
论文作者
论文摘要
物理可观察物的不变性，例如局部场重新定义下的粒子质量，是量子场理论的众所周知且重要的特性。在本文中，另一方面，我们研究了非局部领域重新定义，从理论中消除了可观察到的物理。确实，通过给出明确的例子，我们提出了可逆的非本地场重新定义，将大规模理论降低至无数理论，反之亦然。所研究的示例是：经典的谐波振荡器，标量场理论和狄拉克场理论。
The invariance of physical observables like particle's mass under a local field redefinition is a well-known and important property of quantum field theory. In this paper, on the other hand, we investigate nonlocal field redefinitions eliminating a physical observable from a theory. Indeed, by giving explicit examples, we present invertible nonlocal field redefinitions reducing a massive theory to the massless one, and vice versa. The studied examples are: classical harmonic oscillator, the scalar field theory, and the Dirac field theory.
