BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260815T092813Z
LAST-MODIFIED:20201124T150752Z
DTSTART:20201123T200000Z
DTEND:20201123T210000Z
UID:event2374@bu.edu
URL:http://physics.bu.edu/internal/events/show/2374
SUMMARY:Aspects of spontaneous symmetry breaking in LCT
DESCRIPTION:Featuring Kyriakos Grammatikos\, Boston University\nHosted by: 
	Eric Boyers\n\nPart of the Graduate Student Council Events.\n\nPart of the 
	student seminar series. A recording will be posted on the event page.\n\nAb
	stract: QFT still remains an elusive subject about 80 years after its conce
	ption. While remaining the only consistent framework for the relativistic t
	reatment of quantum particles\, it boasts a vast phenomenological variety a
	nd it still poses conceptual and computational challenges\, one being the d
	etection of phase transitions in strongly interacting QFTs. The majority of
	 existing tools rely on putting QFTs on a lattice\, a powerful approach tha
	t requires however treating the theory in finite volume and extrapolating t
	o obtain dynamical quantities. In this talk\, I present a tool that aims to
	 fill this gap. Lightcone Conformal Truncation (LCT) is a computational sch
	eme that marries together the power of conformal field theories and lightco
	ne quantization in a framework capable of extracting variational approximat
	ions to infinite volume correlation functions and more importantly\, an app
	roximation to the spectrum of a field theory\, which may reveal important i
	nformation about the low-lying bound states of the theory.  We use our tool
	 to investigate a boson in a quartic potential with a cubic deformation\, a
	 model known to exhibit a transition\, which at weak coupling is a product 
	of spontaneous symmetry breaking. We present results on the spectrum\, corr
	elation functions and the map of the phase transition and discuss possible 
	emergent descriptions for the line of criticality.
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR