Rosenbluth nonlinearity from two-photon exchange

Two-Photon Exchange in (Semi-)Inclusive DIS

In this note1 we consider effects of a Two-Photon Exchange (TPE) in inclusive DIS and semi-inclusive DIS (SIDIS). In particular, transverse single spin asymmetries are generated in inclusive DIS if more than one photon is exchanged between the lepton and the hadron. We briefly summarize the TPE in DIS in the parton model and extend our approach to SIDIS, where a new leading twist sin(2φ) contri...

Two - Photon Exchange in Electron - Deuteron Scattering

We show that multiple scattering of the electron (i.e., two-photon exchange) in electron-deuteron elastic scattering leads to a small component in the cross section, which decreases very slowly with momentum transfer, and may dominate the cross section at high momentum transfer.

Search for Exchange-Antisymmetric Two-Photon States

Recent experiments have explored the possibility of small violations of the usual relationship between spin and statistics [1–5]. Although such violations are impossible within conventional quantum field theory [6], there are motivations for considering them; see e.g. Ref. [7]. If photons do not obey Bose-Einstein (BE) statistics, there will be a non-zero probability that two photons are in an ...

Nonlinearity In Exchange Rates and Forecasting

Cascaded two-photon nonlinearity in a one-dimensional waveguide with multiple two-level emitters

We propose and theoretically investigate a model to realize cascaded optical nonlinearity with few atoms and photons in one-dimension (1D). The optical nonlinearity in our system is mediated by resonant interactions of photons with two-level emitters, such as atoms or quantum dots in a 1D photonic waveguide. Multi-photon transmission in the waveguide is nonreciprocal when the emitters have diff...