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gr-qc2008★ 1 cited
Physical Interpretation of Coordinates for the Schwarzschild Metric
Tarun Biswas
Since its first introduction, the Schwarzschild metric has been written in various coordinate systems. This has been done primarily to understand the nature of the coordinate singu…
hep-th2008
Nonunitary Interaction, Adiabatic Condition, Haag's Theorem and Renormalization
Tarun Biswas
Haag's theorem has shown that the transformation between interacting and free field operators in a reasonable quantum field theory cannot be unitary. Here, the original requirement…