Zobrazeno 1 - 10
of 353
pro vyhledávání: '"P. Ihssen"'
Autor:
Ihssen, Friederike, Pawlowski, Jan M.
The physics of strongly correlated systems offers some of the most intriguing physics challenges such as competing orders or the emergence of dynamical composite degrees of freedom. Often, the resolution of these physics challenges is computationally
Externí odkaz:
http://arxiv.org/abs/2409.13679
Functional approaches are the only first principle QCD setup that allow for direct computations at finite density. Predictive power and quantitative reliability of the respective results can only be obtained within a systematic expansion scheme with
Externí odkaz:
http://arxiv.org/abs/2408.08413
Autor:
Geisert, Simon, Ihssen, Soeren, Winkel, Patrick, Spiecker, Martin, Fechant, Mathieu, Paluch, Patrick, Gosling, Nicolas, Zapata, Nicolas, Günzler, Simon, Rieger, Dennis, Bénâtre, Denis, Reisinger, Thomas, Wernsdorfer, Wolfgang, Pop, Ioan M.
Publikováno v:
Appl. Phys. Lett. 125, 064002 (2024)
We demonstrate a qubit-readout architecture where the dispersive coupling is entirely mediated by a kinetic inductance. This allows us to engineer the dispersive shift of the readout resonator independent of the qubit and resonator capacitances. We v
Externí odkaz:
http://arxiv.org/abs/2407.16342
Autor:
Braun, Jens, Chen, Yong-rui, Fu, Wei-jie, Gao, Fei, Huang, Chuang, Ihssen, Friederike, Pawlowski, Jan M., Rennecke, Fabian, Sattler, Franz R., Tan, Yang-yang, Wen, Rui, Yin, Shi
The chiral crossover of QCD at finite temperature and vanishing baryon density turns into a second order phase transition if lighter than physical quark masses are considered. If this transition occurs sufficiently close to the physical point, its un
Externí odkaz:
http://arxiv.org/abs/2310.19853
QCD at large density reveals a rich phase structure, ranging from a potential critical end point and inhomogeneous phases or moat regimes to color superconducting ones with competing order effects. Resolving this region in the phase diagram of QCD wi
Externí odkaz:
http://arxiv.org/abs/2309.07335
Autor:
Ihssen, Friederike, Pawlowski, Jan M.
Renormalisation group approaches are tailor made for resolving the scale-dependence of quantum and statistical systems, and hence their phase structure and critical physics. Usually this advantage comes at the price of having to truncate the full the
Externí odkaz:
http://arxiv.org/abs/2305.00816
We compute non-perturbative spectral functions in a scalar $\phi^4$-theory in three spacetime dimensions via the spectral functional renormalisation group. This approach allows for the direct, manifestly Lorentz covariant computation of correlation f
Externí odkaz:
http://arxiv.org/abs/2303.16719
Autor:
Willsch, Dennis, Rieger, Dennis, Winkel, Patrick, Willsch, Madita, Dickel, Christian, Krause, Jonas, Ando, Yoichi, Lescanne, Raphaël, Leghtas, Zaki, Bronn, Nicholas T., Deb, Pratiti, Lanes, Olivia, Minev, Zlatko K., Dennig, Benedikt, Geisert, Simon, Günzler, Simon, Ihssen, Sören, Paluch, Patrick, Reisinger, Thomas, Hanna, Roudy, Bae, Jin Hee, Schüffelgen, Peter, Grützmacher, Detlev, Buimaga-Iarinca, Luiza, Morari, Cristian, Wernsdorfer, Wolfgang, DiVincenzo, David P., Michielsen, Kristel, Catelani, Gianluigi, Pop, Ioan M.
Publikováno v:
Nat. Phys. 20, 815 (2024)
Approaches to developing large-scale superconducting quantum processors must cope with the numerous microscopic degrees of freedom that are ubiquitous in solid-state devices. State-of-the-art superconducting qubits employ aluminum oxide (AlO$_x$) tun
Externí odkaz:
http://arxiv.org/abs/2302.09192
We investigate the RG-time integration of the effective potential in the functional renormalization group in the presence of spontaneous symmetry breaking and its subsequent convexity restoration on the example of a scalar theory in $d=3$. The featur
Externí odkaz:
http://arxiv.org/abs/2302.04736
We apply the Local Discontinuous Galerkin discretisation to flow equations of the O(N)-model in the Local Potential Approximation. The improved stability is directly observed by solving the flow equation for various $N$ and space-time dimensions $d$.
Externí odkaz:
http://arxiv.org/abs/2207.12266