Conveners
(DTP) M1-2 Fields, Particles, and Strings | Champs, particules et cordes (DPT)
- Randy Lewis
The interpretation of experimental results in particle physics is complicated by the fact that essentially all experimental probes of short distance physics are complex multi-scale processes, and so our ability to interpret experiments depends on our ability to factorize the physics at different distance scales. A simple example is the factorization of hadronic cross sections into...
The instability of the vacuum in the presence of a strong static electric field that creates charged pairs is Schwinger pair production. In this talk we describe the classical field theory of pair creation using non-hermitian quantum mechanics. The Klein-Gordon equation in 1+1 dimensions in the presence of a constant electric field with an ansatz $\phi(x,t) = e^{-\mathrm{i}\omega...
The Eguchi-Hanson-AdS_5 family of spacetimes are a class of static, geodesically complete, asymptotically locally AdS_5 soliton solutions of the vacuum Einstein equations with a negative cosmological constant. They have negative mass and are parameterized by an integer p ≥ 3 with a conformal boundary with spatial topology L(p, 1). In this talk, I will introduce mode solutions of the scalar...
We study the quantum-classical Einstein equation from a Hamiltonian perspective where the classical gravitational phase space variables and matter state evolve self-consistently. Applied to cosmology, we show that the resulting equations with a quantized massive scalar field permit exact semiclassical static universes, where the curvature and cosmological constant $\Lambda$ arise as discrete...
In this talk, we present a novel approach to fully renormalize observables such as theoretical predictions for cross sections and decay rates in particle physics. While renormalization techniques have been utilized to absorb infinities, the theoretical expressions for observables are still not fully renormlazed as they contain dependence on arbitrary subtraction schemes and scales. We resolve...
