First exploration of the physical Riemann surfaces of the ratio <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>G</mml:mi><mml:mi>E</mml:mi><mml:mi mathvariant="normal">Λ</mml:mi></mml:msubsup><mml:mo>/</mml:mo><mml:msubsup><mml:mi>G</mml:mi><mml:mi>M</mml:mi><mml:mi mathvariant="normal">Λ</mml:mi></mml:msubsup></mml:math>
Physical review. D/Physical review. D.