Virtual excitations in the ultra-strongly-coupled spin-boson model: physical results from unphysical modes

@inproceedings{Lambert2019VirtualEI,
  title={Virtual excitations in the ultra-strongly-coupled spin-boson model: physical results from unphysical modes},
  author={Neill Lambert and Shahnawaz Ahmed and Mauro Cirio and Franco Nori},
  year={2019}
}
Neill Lambert, ∗ Shahnawaz Ahmed, 2, 3, ∗ Mauro Cirio, 1 and Franco Nori 5 Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan BITS Pilani, Goa campus, Sancoale, Goa 403726, India Wallenberg Centre for Quantum Technology, Department of Microtechnology and Nanoscience, Chalmers University of Technology, 412 96 Gothenburg, Sweden Graduate School of China Academy of Engineering Physics, No. 10 Xibeiwang East Road, Haidian District… 
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