Junchen Rong
YOU?
Author Swipe
View article: Phase Transitions and Remnants of Fractionalization at Finite Temperature in the Triangular Lattice Quantum Loop Model
Phase Transitions and Remnants of Fractionalization at Finite Temperature in the Triangular Lattice Quantum Loop Model Open
The quantum loop and dimer models are archetypal correlated systems with local constraints. With natural foundations in statistical mechanics, they are of direct relevance to various important physical concepts and systems, such as topolog…
View article: Irrational CFTs from coupled anyon chains with non-invertible symmetries?
Irrational CFTs from coupled anyon chains with non-invertible symmetries? Open
Irrational CFTs in 1+1d with a discrete spectrum and no conserved currents other than the stress-tensor are expected to be generic, unsolvable by standard methods, and hard to construct explicitly. We introduce a lattice model that realize…
View article: UV complete local field theory of persistent symmetry breaking in 2+1 dimensions
UV complete local field theory of persistent symmetry breaking in 2+1 dimensions Open
Spontaneous symmetry breaking can persist at all temperatures in certain biconical $\mathrm{O}(N)\times \mathbb{Z}_2$ vector models when the underlying field theories are ultraviolet complete. So far, the existence of such theories has bee…
View article: Hidden orders and phase transitions for the fully packed quantum loop model on the triangular lattice
Hidden orders and phase transitions for the fully packed quantum loop model on the triangular lattice Open
Quantum loop and dimer models are prototypical correlated systems with local constraints, which are not only intimately connected to lattice gauge theories and topological orders but are also widely applicable to the broad research areas o…
View article: Local/Short-range conformal field theories from long-range perturbation theory
Local/Short-range conformal field theories from long-range perturbation theory Open
We show that by imposing the conformal Wald identity, one can extract conformal data of the corresponding short-range/local CFT from the long-range perturbation theory. We first apply this to the O(N) vector model. We demonstrate that by p…
View article: Surface phase transitions in a (1+1)-dimensional $SU(2)_1$ conformal\n field theory boundary coupled to a (2+1)-dimensional $Z_2$ bulk
Surface phase transitions in a (1+1)-dimensional $SU(2)_1$ conformal\n field theory boundary coupled to a (2+1)-dimensional $Z_2$ bulk Open
We design a (2+1))-dimensional [(2+1)D] quantum spin model in which spin-1/2\nladders are coupled through antiferromagnetic Ising interactions. The model\nhosts a quantum phase transition in the (2+1)D $Z_2$ universality class from\nthe Ha…
View article: Classifying irreducible fixed points of five scalar fields in perturbation theory
Classifying irreducible fixed points of five scalar fields in perturbation theory Open
Classifying perturbative fixed points near upper critical dimensions plays an important role in understanding the space of conformal field theories and critical phases of matter. In this work, we consider perturbative fixed points of N=5 s…
View article: Report on 2306.09419v2
Report on 2306.09419v2 Open
Classifying perturbative fixed points near upper critical dimensions plays an important role in understanding the space of conformal field theories and critical phases of matter.In this work, we consider perturbative fixed points of N = 5 …
View article: Report on 2306.09419v2
Report on 2306.09419v2 Open
Classifying perturbative fixed points near upper critical dimensions plays an important role in understanding the space of conformal field theories and critical phases of matter.In this work, we consider perturbative fixed points of N = 5 …
View article: From O(3) to Cubic CFT: Conformal Perturbation and the Large Charge Sector
From O(3) to Cubic CFT: Conformal Perturbation and the Large Charge Sector Open
The Cubic CFT can be understood as the O(3) invariant CFT perturbed by a slightly relevant operator. In this paper, we use conformal perturbation theory together with the conformal data of the O(3) vector model to compute the anomalous dim…
View article: Finite-temperature critical behaviors in 2D long-range quantum Heisenberg model
Finite-temperature critical behaviors in 2D long-range quantum Heisenberg model Open
The Mermin-Wagner theorem states that spontaneous continuous symmetry breaking is prohibited in systems with short-range interactions at spatial dimension D ≤ 2. For long-range interactions with a power-law form (1/ r α ), the theorem furt…
View article: Report on 2306.09419v2
Report on 2306.09419v2 Open
Classifying perturbative fixed points near upper critical dimensions plays an important role in understanding the space of conformal field theories and critical phases of matter.In this work, we consider perturbative fixed points of N = 5 …
View article: Cubic* criticality emerging from a quantum loop model on triangular lattice
Cubic* criticality emerging from a quantum loop model on triangular lattice Open
Quantum loop and dimer models are archetypal examples of correlated systems with local constraints. Obtaining generic solutions for these models is difficult due to the lack of controlled methods to solve them in the thermodynamic limit. N…
View article: Many versus one: The disorder operator and entanglement entropy in fermionic quantum matter
Many versus one: The disorder operator and entanglement entropy in fermionic quantum matter Open
Motivated by recent development of the concept of the disorder operator and its relation with entanglement entropy in bosonic systems, here we show the disorder operator successfully probes many aspects of quantum entanglement in fermionic…
View article: Classical fully packed loop model with attractive interactions on the square lattice
Classical fully packed loop model with attractive interactions on the square lattice Open
We study a classical model of fully-packed loops on the square lattice, which\ninteract through attractive loop segment interactions between opposite sides of\nplaquettes. This study is motivated by effective models of interacting quantum\…
View article: Spontaneous breaking of finite group symmetries at all temperatures
Spontaneous breaking of finite group symmetries at all temperatures Open
We study conformal field theories with finite group symmetries with spontaneous symmetry breaking (SSB) phases which persist at all temperatures. We work with two \lambda \phi^4 theories coupled through their mass terms. The two \lam…
View article: Quantum criticality and entanglement for two dimensional long-range Heisenberg bilayer
Quantum criticality and entanglement for two dimensional long-range Heisenberg bilayer Open
The study of quantum criticality and entanglement in systems with long-range (LR) interactions is still in its early stages, with many open questions remaining. In this work, we investigate critical exponents and scaling of entanglement en…
View article: Finite-temperature critical behaviors in 2D long-range quantum Heisenberg model
Finite-temperature critical behaviors in 2D long-range quantum Heisenberg model Open
The Mermin-Wagner theorem states that spontaneous continuous symmetry breaking is prohibited in systems with short-range interactions at spatial dimension $D\le 2$. For long-range interactions with a power-law form ($1/r^α$), the theorem f…
View article: Report on 2209.07103v4
Report on 2209.07103v4 Open
Motivated by recent development of the concept of the disorder operator and its relation with entanglement entropy in bosonic system, here we show the disorder operator successfully probe many aspects of quantum entanglement in fermionic m…
View article: Report on 2209.07103v4
Report on 2209.07103v4 Open
Motivated by recent development of the concept of the disorder operator and its relation with entanglement entropy in bosonic system, here we show the disorder operator successfully probe many aspects of quantum entanglement in fermionic m…
View article: Fully packed quantum loop model on the square lattice: Phase diagram and application for Rydberg atoms
Fully packed quantum loop model on the square lattice: Phase diagram and application for Rydberg atoms Open
The quantum dimer and loop models attract great attentions, partially because the fundamental importance in the phases and phase transitions emerging in these prototypical constrained systems, and partially due to their intimate relevance …
View article: Fermion disorder operator at Gross-Neveu and deconfined quantum criticalities
Fermion disorder operator at Gross-Neveu and deconfined quantum criticalities Open
The fermion disorder operator has been shown to reveal the entanglement information in 1D Luttinger liquids and 2D free and interacting Fermi and non-Fermi liquids emerging at quantum critical points(QCP). Here we study, by means of large-…
View article: Report on 2205.13964v3
Report on 2205.13964v3 Open
We study conformal field theories with finite group symmetries with spontaneous symmetry breaking (SSB) phases which persist at all temperatures.We work with two λφ 4 theories coupled through their mass terms.The two λφ 4 theories are chos…
View article: Report on 2205.13964v3
Report on 2205.13964v3 Open
We study conformal field theories with finite group symmetries with spontaneous symmetry breaking (SSB) phases which persist at all temperatures.We work with two λφ 4 theories coupled through their mass terms.The two λφ 4 theories are chos…
View article: Many versus one: the disorder operator and entanglement entropy in fermionic quantum matter
Many versus one: the disorder operator and entanglement entropy in fermionic quantum matter Open
Motivated by recent development of the concept of the disorder operator and its relation with entanglement entropy in bosonic systems, here we show the disorder operator successfully probes many aspects of quantum entanglement in fermionic…
View article: Many versus one: the disorder operator and entanglement entropy in fermionic quantum matter
Many versus one: the disorder operator and entanglement entropy in fermionic quantum matter Open
Motivated by recent development of the concept of the disorder operator and its relation with entanglement entropy in bosonic systems, here we show the disorder operator successfully probes many aspects of quantum entanglement in fermionic…
View article: Precision bootstrap for the $$ \mathcal{N} $$ = 1 super-Ising model
Precision bootstrap for the $$ \mathcal{N} $$ = 1 super-Ising model Open
A bstract In this note we report an improved determination of the scaling dimensions and OPE coefficients of the minimal supersymmetric extension of the 3d Ising model using the conformal bootstrap. We also show how this data can be used a…
View article: Hidden orders and phase transitions for the fully packed quantum loop model on the triangular lattice
Hidden orders and phase transitions for the fully packed quantum loop model on the triangular lattice Open
Quantum loop and dimer models are prototypical correlated systems with local constraints, which are not only intimately connected to lattice gauge theories and topological orders but are also widely applicable to the broad research areas o…