An Analog Model for Quantum Lightcone Fluctuations in Nonlinear Optics

We propose an analog model for quantum gravity effects using nonlinear dielectrics. Fluctuations of the spacetime lightcone are expected in quantum gravity, leading to variations in the flight times of pulses. This effect can also arise in a nonlinear material. We propose a model in which fluctuations of a background electric field, such as that produced by a squeezed photon state, can cause fluctuations in the effective lightcone for probe pulses. This leads to a variation in flight times analogous to that in quantum gravity. We make some numerical estimates which suggest that the effect might be large enough to be observable.Comment: 15 pages, no figure

Supplementary data for: "Hygrothermal assessment of internally insulated historic solid masonry walls with focus on the thermal bridge due to internal partition walls"

Supplementary data for: N.F. Jensen, C. Rode, E.B. Møller, 2021, "Hygrothermal assessment of internally insulated historic solid masonry walls with focus on the thermal bridge due to internal partition walls"The article is submitted for review for the International Building Physics Conference 2021.The authors are awaiting link/DOI for the article. This study investigated the hygrothermal performance of five thermal insulation systems for internal retrofitting purposes. Focus was on the hygrothermal performance near partition brick walls compared to the middle of the wall. The setup consisted of two 40-feet (12.2 m) insulated reefer containers with controlled indoor climate, reconfigured with several holes (1x2 m each) containing solid masonry walls with embedded wooden elements on the interior side, an internal brick partition wall and different internal insulation systems, with and without exterior hydrophobisation. Relative humidity and temperature were measured over five years in the masonry/insulation interface and near the interior surface, in the centre of the test field and near the internal partition wall. In addition, calibrated numerical simulations were performed for further investigation of the thermal bridge effect. The datasets comprises:1) Measurements from the experimental setup (hourly and 96-hour average values)2) Visual representations of the measurements from the experimental setup 3) VTT mould growth modelling (calculation files and results)4) Calibrated Delphin simulation models (including Output JPG files

Supplementary data for: "Hygrothermal assessment of internally insulated historic solid masonry walls with focus on the thermal bridge due to internal partition walls"

Supplementary data for: N.F. Jensen, C. Rode, E.B. Møller, 2021, "Hygrothermal assessment of internally insulated historic solid masonry walls with focus on the thermal bridge due to internal partition walls" This study investigated the hygrothermal performance of five thermal insulation systems for internal retrofitting purposes. Focus was on the hygrothermal performance near partition brick walls compared to the middle of the wall. The setup consisted of two 40-feet (12.2 m) insulated reefer containers with controlled indoor climate, reconfigured with several holes (1x2 m each) containing solid masonry walls with embedded wooden elements on the interior side, an internal brick partition wall and different internal insulation systems, with and without exterior hydrophobisation. Relative humidity and temperature were measured over five years in the masonry/insulation interface and near the interior surface, in the centre of the test field and near the internal partition wall. In addition, calibrated numerical simulations were performed for further investigation of the thermal bridge effect. The datasets comprises:1) Measurements from the experimental setup (hourly and 96-hour average values)2) Visual representations of the measurements from the experimental setup 3) VTT mould growth modelling (calculation files and results)4) Calibrated Delphin simulation models (including Output JPG files

Supplementary data for "Hygrothermal assessment of diffusion open insulation systems for interior retrofitting of solid masonry walls"

Supplementary data for: N.F. Jensen, T.R. Odgaard, S.P. Bjarløv, B. Andersen, C. Rode, E.B. Møller, 2020, "Hygrothermal assessment of diffusion open insulation systems for interior retrofitting of solid masonry walls", Building and Environment Vol 182, pp. 107011 The datasets comprises: 1) Measurement data2) Mould-growth modelling results (VTT, MRD and WUFI-Bio)3) Mycometer on-site test results4) Photo documentation from the on-site mould identification5) pH measurements for the internal render and adhesive mortars in the interface between masonry wall and insulation systems. 6) Wind driven rain measurement