I. INTRODUCTION

II. THEORETICAL BACKGROUND  
A. Conventions  
B. Cosmological Collider bispectrum  
C. Non-perturbative model for the squeezed matter bispectrum  
D. Non-perturbative model for the collapsed matter trispectrum  
E. Scale-dependent bias  

III. METHODOLOGY  
A. Simulations  
B. Measurements and likelihood  

IV. RESULTS  
B. Information content of the matter bispectrum and trispectrum  
C. Scale-dependent halo bias  

V. CONCLUSION