120 citations · 929 across the 29 of their papers we have counts for
29 papers
Logarithmic Wavelets for Dark Matter--Phonon Scattering
Xu-Xiang Li, Zhengkang Zhang
Phonon excitations in crystals are a promising detection channel for sub-GeV dark matter (DM), and anisotropic targets add directional sensitivity through the daily modulation of t…
Astrophysical Uncertainties in Sub-GeV Dark Matter Detection via Single Phonon Excitations
Xu-Xiang Li, Navaneetha Valsan, Zhengkang Zhang
We present the first systematic study of how local dark matter velocity distribution uncertainties propagate into direct detection rates for dark matter--single phonon scattering.…
Optimal Architecture and Fundamental Bounds in Neural Network Field Theory
Zhengkang Zhang
Neural network field theory (NNFT) represents fields as neural networks and samples field configurations by drawing network parameters from a probability distribution. We identify…
Geometric Building Blocks of Effective Field Theory Amplitudes
Timothy Cohen, Xu-Xiang Li, Zhengkang Zhang
On-shell amplitudes are invariant under field redefinitions. Nonderivative field redefinitions have a natural interpretation as coordinate transformations on the target manifold. G…
The Geometric Universal One-Loop Effective Action
Xu-Xiang Li, Xiaochuan Lu, Zhengkang Zhang
We derive universal formulae for integrating out heavy degrees of freedom in scalar field theories up to one-loop level in terms of covariant quantities associated with the geometr…
What is the Geometry of Effective Field Theories?
Timothy Cohen, Xiaochuan Lu, Zhengkang Zhang
We elaborate on a recently proposed geometric framework for scalar effective field theories. Starting from the action, a metric can be identified that enables the construction of g…
Neural Scaling Laws From Large-N Field Theory: Solvable Model Beyond the Ridgeless Limit
Zhengkang Zhang
Many machine learning models based on neural networks exhibit scaling laws: their performance scales as power laws with respect to the sizes of the model and training data set. We…
Structures of Neural Network Effective Theories
Ian Banta, Tianji Cai, Nathaniel Craig +1
We develop a diagrammatic approach to effective field theories (EFTs) corresponding to deep neural networks at initialization, which dramatically simplifies computations of finite-…
Anomaly Cancellation in Effective Field Theories From the Covariant Derivative Expansion
Timothy Cohen, Xiaochuan Lu, Zhengkang Zhang
We extend our recently-proposed formalism for calculating anomalies of global and gauge symmetries using the Covariant Derivative Expansion to include a general class of operators…
Anomalies From the Covariant Derivative Expansion
Timothy Cohen, Xiaochuan Lu, Zhengkang Zhang
We revisit the calculation of anomalies for global and gauge symmetries in the framework of the Covariant Derivative Expansion (CDE). Due to the presence of UV divergences, the res…
Dark Matter Direct Detection in Materials with Spin-Orbit Coupling
Hsiao-Yi Chen, Andrea Mitridate, Tanner Trickle +3
Semiconductors with band gaps have been shown to be promising targets to search for sub-MeV mass dark matter (DM). In this paper we focus on a class of ma…
Magic Zeroes and Hidden Symmetries
Nathaniel Craig, Isabel Garcia Garcia, Arkady Vainshtein +1
Selection rules arising from accidental or broken symmetries may be sufficiently obscure that their agency is hidden, leading to the appearance of "magic zeroes" -- quantities that…
Extended Calculation of Dark Matter-Electron Scattering in Crystal Targets
Sinéad M. Griffin, Katherine Inzani, Tanner Trickle +2
We extend the calculation of dark matter direct detection rates via electronic transitions in general dielectric crystal targets, combining state-of-the-art density functional theo…
Directional Detectability of Dark Matter With Single Phonon Excitations: Target Comparison
Ahmet Coskuner, Tanner Trickle, Zhengkang Zhang +1
Single phonon excitations are sensitive probes of light dark matter in the keV-GeV mass window. For anisotropic target materials, the signal depends on the direction of the incomin…
Effective Field Theory of Dark Matter Direct Detection With Collective Excitations
Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek
We develop a framework for computing light dark matter direct detection rates through single phonon and magnon excitations via general effective operators. Our work generalizes pre…
Multi-Channel Direct Detection of Light Dark Matter: Target Comparison
Sinead M. Griffin, Katherine Inzani, Tanner Trickle +2
Direct detection experiments for light dark matter are making enormous leaps in reaching previously unexplored model space. Several recent proposals rely on collective excitations,…
Multi-Channel Direct Detection of Light Dark Matter: Theoretical Framework
Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek +2
We present a unified theoretical framework for computing spin-independent direct detection rates via various channels relevant for sub-GeV dark matter -- nuclear recoils, electron…
Effective field theory approach to trans-TeV supersymmetry: covariant matching, Yukawa unification and Higgs couplings
James D. Wells, Zhengkang Zhang
Dismissing traditional naturalness concerns while embracing the Higgs boson mass measurement and unification motivates careful analysis of trans-TeV supersymmetric theories. We tak…
Establishing the Isolated Standard Model
James D. Wells, Zhengkang Zhang, Yue Zhao
The goal of this article is to initiate a discussion on what it takes to claim "there is no new physics at the weak scale," namely that the Standard Model (SM) is "isolated." The l…
Time to Go Beyond Triple-Gauge-Boson-Coupling Interpretation of Pair Production
Zhengkang Zhang
boson pair production processes at and colliders have been conventionally interpreted as measurements of and triple gauge couplings (TGCs). Such inter…
Covariant diagrams for one-loop matching
Zhengkang Zhang
We present a diagrammatic formulation of recently-revived covariant functional approaches to one-loop matching from an ultraviolet (UV) theory to a low-energy effective field theor…
Mixed Heavy-Light Matching in the Universal One-Loop Effective Action
Sebastian A. R. Ellis, Jeremie Quevillon, Tevong You +1
Recently, a general result for evaluating the path integral at one loop was obtained in the form of the Universal One-Loop Effective Action. It may be used to derive effective fiel…
Renormalization group evolution of the universal theories EFT
James D. Wells, Zhengkang Zhang
The conventional oblique parameters analyses of precision electroweak data can be consistently cast in the modern framework of the Standard Model effective field theory (SMEFT) whe…
Effective theories of universal theories
James D. Wells, Zhengkang Zhang
It is well-known but sometimes overlooked that constraints on the oblique parameters (most notably and parameters) are generally speaking only applicable to a special class…