@inproceedings{34138,
  abstract     = {{Variational Quantum Algorithms (VQAs), such as the Quantum Approximate
Optimization Algorithm (QAOA) of [Farhi, Goldstone, Gutmann, 2014], have seen
intense study towards near-term applications on quantum hardware. A crucial
parameter for VQAs is the depth of the variational ansatz used - the smaller
the depth, the more amenable the ansatz is to near-term quantum hardware in
that it gives the circuit a chance to be fully executed before the system
decoheres. This potential for depth reduction has made VQAs a staple of Noisy
Intermediate-Scale Quantum (NISQ)-era research.
  In this work, we show that approximating the optimal depth for a given VQA
ansatz is intractable. Formally, we show that for any constant $\epsilon>0$, it
is QCMA-hard to approximate the optimal depth of a VQA ansatz within
multiplicative factor $N^{1-\epsilon}$, for $N$ denoting the encoding size of
the VQA instance. (Here, Quantum Classical Merlin-Arthur (QCMA) is a quantum
generalization of NP.) We then show that this hardness persists even in the
"simpler" setting of QAOAs. To our knowledge, this yields the first natural
QCMA-hard-to-approximate problems. To achieve these results, we bypass the need
for a PCP theorem for QCMA by appealing to the disperser-based NP-hardness of
approximation construction of [Umans, FOCS 1999].}},
  author       = {{Bittel, Lennart and Gharibian, Sevag and Kliesch, Martin}},
  booktitle    = {{Proceedings of the 38th Computational Complexity Conference (CCC)}},
  number       = {{34}},
  pages        = {{34:1--34:24}},
  title        = {{{The Optimal Depth of Variational Quantum Algorithms Is QCMA-Hard to Approximate}}},
  doi          = {{10.4230/LIPIcs.CCC.2023.34}},
  volume       = {{264}},
  year         = {{2023}},
}

@inbook{45990,
  author       = {{Müller, Inez}},
  booktitle    = {{Interkulturelle Konstellationen in Literaturwissenschaft und Literaturdidaktik. Festschrift für Michael Hofmann}},
  editor       = {{Böker, Ines}},
  isbn         = {{978-3-8260-7919-1}},
  pages        = {{329--342}},
  publisher    = {{Königshausen & Neumann}},
  title        = {{{Zur Darstellung der Afrikanischen Europäerin in Geschichte und Gegenwart - Sharon Dodua Otoos Roman 'Adas Raum'}}},
  year         = {{2023}},
}

@inbook{45880,
  author       = {{Elrich, Alina and Kaimann, Daniel and Fahr, René and Kundisch, Dennis and Mir Djawadi, Behnud and Müller, Michelle and Poniatowski, Martin and Schäfers, Sabrina and Frick, Bernd}},
  booktitle    = {{On-The-Fly Computing -- Individualized IT-services in dynamic markets}},
  editor       = {{Haake, Claus-Jochen and Meyer auf der Heide, Friedhelm and Platzner, Marco and Wachsmuth, Henning and Wehrheim, Heike}},
  pages        = {{45--64}},
  publisher    = {{Heinz Nixdorf Institut, Universität Paderborn}},
  title        = {{{Empirical Analysis in Markets for OTF Services}}},
  doi          = {{10.5281/zenodo.8068430}},
  volume       = {{412}},
  year         = {{2023}},
}

@article{46018,
  author       = {{Su, Ran and Zhang, Jiahui and Wong, Vienna and Zhang, Dawei and Yang, Yong and Luo, Zheng‐Dong and Wang, Xiaojing and Wen, Hui and Liu, Yang and Seidel, Jan and Yang, Xiaolong and Pan, Ying and Li, Fa‐tang}},
  issn         = {{0935-9648}},
  journal      = {{Advanced Materials}},
  keywords     = {{Mechanical Engineering, Mechanics of Materials, General Materials Science}},
  publisher    = {{Wiley}},
  title        = {{{Engineering Sub‐Nanometer Hafnia‐Based Ferroelectric to Break The Scaling Relation for High‐Efficiency Piezocatalytic Water Splitting}}},
  doi          = {{10.1002/adma.202303018}},
  year         = {{2023}},
}

@book{46031,
  author       = {{Schreckenberg, Carolin}},
  isbn         = {{978-3-8288-4924-2}},
  publisher    = {{Tectum}},
  title        = {{{Die junge Käthe Kollwitz in ihrer künstlerischen Findungsphase}}},
  volume       = {{KONTEXT Kunst – Vermittlung – Kulturelle Bildung}},
  year         = {{2023}},
}

@article{45816,
  author       = {{Dieter, Peter and Stumpe, Miriam and Ulmer, Marlin Wolf and Schryen, Guido}},
  journal      = {{Transportation Research Part D}},
  title        = {{{Anticipatory Assignment of Passengers to Meeting Points for Taxi-Ridesharing}}},
  volume       = {{121}},
  year         = {{2023}},
}

@article{46061,
  abstract     = {{<jats:p>DNA origami nanostructures have emerged as functional materials for applications in various areas of science and technology. In particular, the transfer of the DNA origami shape into inorganic materials using...</jats:p>}},
  author       = {{Pothineni, Bhanu Kiran and Grundmeier, Guido and Keller, Adrian}},
  issn         = {{2040-3364}},
  journal      = {{Nanoscale}},
  keywords     = {{General Materials Science}},
  publisher    = {{Royal Society of Chemistry (RSC)}},
  title        = {{{Cation-dependent assembly of hexagonal DNA origami lattices on SiO2 surfaces}}},
  doi          = {{10.1039/d3nr02926c}},
  year         = {{2023}},
}

@phdthesis{45781,
  author       = {{Pukrop, Simon}},
  title        = {{{On Cloud Assisted, Restricted, and Reosurce Constrained Scheduling}}},
  doi          = {{10.17619/UNIPB/1-1768 }},
  year         = {{2023}},
}

@misc{46053,
  author       = {{Schneider, Fabian}},
  title        = {{{Utilizing Redundancy in Distributed Heterogeneous Storage}}},
  year         = {{2023}},
}

@inbook{41849,
  author       = {{Harnack, Maria}},
  booktitle    = {{Kulturerbe als kulturelle Praxis – Kulturerbe in der Beratungspraxis}},
  editor       = {{Drascek, Daniel and Groschwitz , Helmut and Wolf, Gabriele}},
  pages        = {{49 -- 63}},
  title        = {{{Potenziale der Kulturerbe-Konvention von 2003. Beispiele aus der Beratungspraxis der Landesstelle Immaterielles Kulturerbe NRW}}},
  year         = {{2023}},
}

@inbook{46088,
  author       = {{Mir Djawadi, Behnud and Plaß, Sabrina and Schäfers, Sabrina}},
  booktitle    = {{Organizational Wrongdoing as the “Foundational” Grand Challenge: Consequences and Impact}},
  editor       = {{Gabbioneta, Claudia and Clemente, Marco and Greenwood, Royston}},
  isbn         = {{9781837532834}},
  issn         = {{0733-558X}},
  pages        = {{73--100}},
  publisher    = {{Emerald Publishing Limited}},
  title        = {{{Peers: Powerful or Negligible? A Systematic Review on Peer Factors and Internal Whistleblowing}}},
  doi          = {{10.1108/s0733-558x20230000085005}},
  volume       = {{85}},
  year         = {{2023}},
}

@misc{46087,
  author       = {{Ranade, Amruta}},
  title        = {{{Graph Neural Network-based Anomaly Detection in  Smart Grid Energy Consumption}}},
  year         = {{2023}},
}

@misc{46086,
  author       = {{Ali, Osama}},
  title        = {{{Highly accurate deep compressed facial recognition}}},
  year         = {{2023}},
}

@techreport{46102,
  author       = {{Leineweber, Jonas}},
  publisher    = {{H-Soz-Kult}},
  title        = {{{Tagungsbericht: 10/20 Jahre UNESCO-Konvention zum Erhalt des Immateriellen Kulturerbes – Auftaktveranstaltung zum Doppeljubiläum}}},
  year         = {{2023}},
}

@misc{45674,
  booktitle    = {{Kunst und Politik}},
  editor       = {{Papenbrock, Martin and Tophinke, Doris}},
  publisher    = {{V&R unipress}},
  title        = {{{Politisches Graffiti}}},
  volume       = {{24}},
  year         = {{2023}},
}

@inbook{45702,
  author       = {{Husic, Ahmed}},
  booktitle    = {{The Attributes of God in Islamic Thought: Contemplating Allah}},
  editor       = {{Khalilizand, Mansooreh}},
  title        = {{{The Omnipotence (al-qudra) and the Will of God (al-irāda) in the Theology of Sayf ad-Dīn al-Āmidī}}},
  year         = {{2023}},
}

@misc{46110,
  author       = {{Ashri, Nivedita}},
  title        = {{{Virtual On-Demand Volunteer System Based on Delaunay Triangulation}}},
  year         = {{2023}},
}

@unpublished{46117,
  abstract     = {{Let $X=X_1\times X_2$ be a product of two rank one symmetric spaces of
non-compact type and $\Gamma$ a torsion-free discrete subgroup in $G_1\times
G_2$. We show that the spectrum of $\Gamma \backslash X$ is related to the
asymptotic growth of $\Gamma$ in the two direction defined by the two factors.
We obtain that $L^2(\Gamma \backslash G)$ is tempered for large class of
$\Gamma$.}},
  author       = {{Weich, Tobias and Wolf, Lasse L.}},
  booktitle    = {{arXiv:2304.09573}},
  title        = {{{Temperedness of locally symmetric spaces: The product case}}},
  year         = {{2023}},
}

@inbook{45760,
  author       = {{Kruse, Iris and Terhorst, Sarah}},
  booktitle    = {{„So viel Größenwahn muss sein!”}},
  editor       = {{Kruse, Iris and Kanning, Julian}},
  isbn         = {{978-3-96848-101-2}},
  pages        = {{155 -- 176}},
  publisher    = {{kopaed}},
  title        = {{{Arm und ausgegrenzt. Kinderarmut in der Literatur und im lesenden Klassenzimmer.}}},
  year         = {{2023}},
}

@article{46133,
  author       = {{Bopp, Frederik and Schall, Johannes and Bart, Nikolai and Vögl, Florian and Cullip, Charlotte and Sbresny, Friedrich and Boos, Katarina and Thalacker, Christopher and Lienhart, Michelle and Rodt, Sven and Reuter, Dirk and Ludwig, Arne and Wieck, Andreas D. and Reitzenstein, Stephan and Müller, Kai and Finley, Jonathan J.}},
  issn         = {{2469-9950}},
  journal      = {{Physical Review B}},
  number       = {{16}},
  publisher    = {{American Physical Society (APS)}},
  title        = {{{Coherent driving of direct and indirect excitons in a quantum dot molecule}}},
  doi          = {{10.1103/physrevb.107.165426}},
  volume       = {{107}},
  year         = {{2023}},
}