pGR0877 Problem 95
PROBLEM STATEMENT: This problem is still being typed.
SOLUTION: (D) As you can check for yourself (the other two commutation relations can be obtain be cyclic permutation of the indexes , , ; note also that I do not use the sign for the operators). Using a sweet relation one must remember (or derive if needed) on the PGRE one has (here I’ve used the property that any operator commutes with itself).
Found a typo? Comment!
Jump to the problem
Want to get a full PDF with solutions? Read THIS.
The comments appending particular solutions are due to the respective users. Educational Testing Service, ETS, the ETS logo, Graduate Record Examinations, and GRE are registered trademarks of Educational Testing Service. The examination questions are © 2008 by ETS.