@conference {sambo2017,
	title = {Spin correlation functions of the ground-state quenched XY model},
	year = {2017},
	month = {24{\textendash}25 May 2017},
	pages = {153},
	publisher = {2nd International Science Graduate Scholars{\textquoteright} Conference},
	address = {PICC, Pasay City},
	abstract = {We obtain exact expressions for the magnetizations and spin correlation functions for the ground-state quenched spin-1/2 XY model with both anisotropy and transverse magnetic field as quench parameters. The spin correlation functions were evaluated by Pfaffians of matrices with spinless fermionic operator correlations as elements. The transverse magnetization is obtained in the thermodynamic limit by the computation of a time-dependent density matrix. Non-analyticities in these quantities at some critical times are indicative of dynamical quantum phase transitions.},
	author = {Jan Philippe B. Sambo and Francis N. C. Paraan}
}
@conference {sambo-qpcmp-2016,
	title = {Dynamical quantum phase transition in the XY model},
	year = {2016},
	month = {18{\textendash}19 Apr 2016},
	publisher = {Workshop on Theories in Quantum Phenomena and Condensed Matter Physics},
	address = {University of the Philippines Los Ba{\~n}os, Laguna},
	url = {https://imsp.uplb.edu.ph/index.php/23-imsp-news/training-and-conference/386-quantum-phenomena-workshop},
	author = {Jan Philippe Sambo}
}
@inproceedings {332,
	title = {Loschmidt amplitude zeros as a probe for criticality in the quenched XY model},
	booktitle = {Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Congress},
	year = {2016},
	month = {18{\textendash}21 Aug 2016},
	pages = {SPP-2016-5C-06},
	address = {University of the Philippines Visayas, Iloilo City},
	abstract = {This paper investigates the correspondence between dynamical phase transitions (DPT) and quenches across quantum critical points (QCP) in ground state quenches of a spin-1/2 XY model. These DPTs are identified by treating the wavefunction overlap between pre- and post-quench states as a partition funtion and determining its Fisher zeros. It is found that DPTs do not always occur when the quench crosses a quantum critical line. A general condition for the occurrence of these DPTs in the XY model is derived.},
	author = {Jan Philippe B. Sambo and Francis N. C. Paraan}
}
@conference {325,
	title = {Quantum criticality in a quenched XY chain},
	year = {2016},
	month = {25{\textendash}27 Jul 2016},
	publisher = {Conference on Entanglement and Non-Equilibrium Physics of Pure and Disordered Systems},
	address = {International Centre for Theoretical Physics, Trieste},
	url = {http://indico.ictp.it/event/7604/},
	author = {Francis A Bayocboc Jr and Jan Philippe Sambo and Francis N. C. Paraan}
}
@conference {371,
	title = {Zeros of the Loschmidt amplitude in the quenched XY model},
	year = {2016},
	month = {4{\textendash}8 Dec 2016},
	pages = {CSCMP 48},
	publisher = {Joint 13th Asia Pacific Physics Conference and 22nd Australian Institute of Physics Congress},
	address = {Brisbane, Australia},
	abstract = {We investigate the notion of dynamical quantum phase transitions (DQPTs) in the quenched ground state of the spin-1/2 XY model H(h0, γ0) to H(h1, γ1). By a Wick rotation, the Loschmidt amplitude is formally treated as a canonical partition function and its zeros used as a probe for criticality. This approach is similar to that used in a Fisher zero analysis in identifying classical phase transitions. The occurrence of real-time zeros for the Loschmidt amplitude signify DQPTs. Previously, a correspondence between DQPTs and quenches across critical points was observed for the transverse-field Ising model. The zeros of the Loschmidt amplitude in a quench of the XY model ground state was calculated and the corresponding condition for a DPQT to occur was derived for a generic quench. It can be observed that not all quenches across critical points are accompanied by DQPTs and vice versa. This result is consistent with previous studies of the quenched XY model.},
	url = {http://aappsbulletin.org/myboard/read.php?Board=others\&id=100},
	author = {Jan Philippe Sambo and Francis N. C. Paraan}
}