Phys.org

Researchers use the S-matrix bootstrap to examine whether string theory is the only consistent theory of quantum gravity

The S-matrix bootstrap is a numerical method that can be used to determine or constrain the scattering amplitudes of particles in quantum field theory using simple principles. Over the past few ...
Nature

Repairing the inconsistent pairwise comparison matrix using a cosine distance and grey wolf optimiser-based framework in multi-criteria decision-making

Hierarchical Problem Organization: The DM must structure the problem hierarchically, breaking it into goals, criteria, and alternatives. Pairwise Comparisons: Pairwise comparisons between criteria and ...
Harvard Business School

Consistent Covariance Matrix Estimation with Cross-Sectional Dependence and Heteroskedasticity in Cross-Sectional Financial Data

Froot, K. A. "Consistent Covariance Matrix Estimation with Cross-Sectional Dependence and Heteroskedasticity in Cross-Sectional Financial Data." Journal of Financial and Quantitative Analysis 24, no.