2014/04/30 by Miloslav Znojil
Mathematics · Physics and Astronomy · #Advanced Differential Geometry Research #Advanced Mathematical Theories and Applications #Extension (predicate logic) #Quantization (signal processing) #Quantum #Quantum Mechanics and Non-Hermitian Physics #Quantum discord #Quantum entanglement #Quantum field theory #Quantum probability #Relationship between string theory and quantum field theory #hep-th #math-ph #math.MP #quant-ph
paper · pdf · doi:10.14311/ap.2016.56.0254
published as Acta Polytechnica 56, No. 3 (2016) 254-257 · 8 pages, extended critical comment on letter "Local PT symmetry violates the no-signaling principle" by Yi-Chan Lee et al, Phys. Rev. Lett. 112, 130404 (2014)
arxiv created 2016/04/05 · openalex created_date 2016/06/24 · openalex publication_date 2016/06/30 · arxiv updated 2016/07/05 · openalex updated_date 2026/08/05
Yi-Chan Lee et al. claim (cf. Phys. Rev. Lett. 112, 130404 (2014)) that the “recent extension of quantum theory to non-Hermitian Hamiltonians” (which is widely known under the nickname of “<em>PT</em>-symmetric quantum theory”) is “likely false as a fundamental theory”. By their opinion their results “essentially kill any hope of <em>PT</em>-symmetric quantum theory as a fundamental theory of nature”. In our present text we explain that their toy-model-based considerations are misleading and that they do not imply any similar conclusions.