Λ_s VCDM is a predictive model combining Λ_s CDM with VCDM gravity via an auxiliary scalar field and sigmoid-smoothed potentials to enable stable mirror AdS-to-dS transitions with possible transient acceleration.
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Using two null-displaced Rindler wedges, the work shows that positive-momentum scalar modes can be thermalized while negative modes stay in vacuum, and that left-handed fermions can be selectively excited while right-handed ones remain near vacuum.
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$\Lambda_{\rm s}$CDM cosmology from a type-II minimally modified gravity
Λ_s VCDM is a predictive model combining Λ_s CDM with VCDM gravity via an auxiliary scalar field and sigmoid-smoothed potentials to enable stable mirror AdS-to-dS transitions with possible transient acceleration.
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Selective Thermalization, Chiral Excitations, and a Case of Quantum Hair in the Presence of Event Horizons
Using two null-displaced Rindler wedges, the work shows that positive-momentum scalar modes can be thermalized while negative modes stay in vacuum, and that left-handed fermions can be selectively excited while right-handed ones remain near vacuum.