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What is Schwinger terms that related with commutator of currents and what is the origin?Why the infinities appear when we consider the product of operators of fields at the same spacetime point?
Schwinger terms are a type of correction term used in theoretical physics to account for the effects of virtual particles. They were first proposed by physicist Julian Schwinger in the 1950s.
The origin of Schwinger terms can be traced back to the development of quantum field theory and the need to account for the effects of virtual particles. Julian Schwinger proposed these correction terms as a way to calculate and understand the effects of these particles on physical phenomena.
Schwinger terms are used to correct for the effects of virtual particles in physical calculations, particularly in quantum field theory. They can significantly impact the results of calculations, especially in high-energy and high-precision experiments.
Yes, Schwinger terms are important in theoretical physics as they provide a way to account for the effects of virtual particles in calculations. Without them, many physical phenomena would not be fully understood or accurately predicted.
No, Schwinger terms themselves cannot be directly observed in experiments. However, their effects can be observed and measured, particularly in high-energy experiments such as those conducted at the Large Hadron Collider.