On the cutoff parameter in the translation-invariant theory of the strong coupling polaron (response to comments [8] on the paper V.D. Lakhno, SSC 152 (2012) 621)

• Published in: Solid state communications Vol. 152; no. 19; pp. 1855 - 1856
• Main Author: Lakhno, V.D.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-10-2012; Elsevier
• Subjects: Bipolaron; Cutoff parameter; Tulub approach; Cutoff parameter; Bipolaron; Tulub approach
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2012.07.019

The paper is a reply to the arguments adduced by the authors of [8] against the results obtained by the author in [6,7]. It is shown that these arguments are based on the erroneous approach made in [8] to the strong coupling limit when the cutoff parameter is introduced in the theory.
► The results obtained in [8] are connected with bad choice of probe function fk. ► The translation-invariant polaron theory is the best in strong coupling limit (SCL). ► It yields the lowest variational estimates of bipolaron energy in SCL.