Erratums Interactio n between a Rydberg atom and neutral perturbers [Phys. Rev, A 36, 971 (1987)]

In our paper Eqs. (9) and (10) were modified incorrectly. Thus, Eq. (9) should be replaced by (9) K _ = [ cos ( π η _ ) K ¯ _ + sin ( π η _ ) ] [ cos ( π η _ ) − sin ( π η _ ) K ¯ _ ] − 1 , https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203746608/2f2626dc-8555-4899-8d1e-59e7f2e652dc/content/eq2653.tif"/>